Which statement about portfolio diversification is correct?

a. proper diversification can reduce or eliminate systematic risk.

b. diversification reduces the portfolio? s expected return because it reduces a portfolio's total risk.

c. as more securities are added to a portfolio, total risk typically would be expected to fall at a decreasing rate.

d. the risk-reducing benefits of diversification do not occur meaningfully until at least 30 individual securities are included in the portfolio.

Prior to its closing, income summary had total debits of $1,190,500 and total credits of $1,476,300. what purpose is served by the income summary account and what is the nature of the entries that resulted in the $1,190,500 and the $1,476,300? the income summary account is used to the accounts. the $1,190,500 represents the , and the $1,476,300 represents . the company had of $ .

Depreciation on the company's equipment for 2017 is computed to be $18,000.the prepaid insurance account had a $6,000 debit balance at december 31, 2017, before adjusting for the costs of any expired coverage. an analysis of the company's insurance policies showed that $1,100 of unexpired insurance coverage remains.the office supplies account had a $700 debit balance on december 31, 2016; and $3,480 of office supplies were purchased during the year. the december 31, 2017, physical count showed $300 of supplies available.two-thirds of the work related to $15,000 of cash received in advance was performed this period.the prepaid insurance account had a $6,800 debit balance at december 31, 2017, before adjusting for the costs of any expired coverage. an analysis of insurance policies showed that $5,800 of coverage had expired.wage expenses of $3,200 have been incurred but are not paid as of december 31, 2017.

land, a building and equipment are acquired for a lump sum of $ 1,000,000. the market values of the land, building and equipment are $ 300,000, $ 800,000 and $ 300,000, respectively. what is the cost assigned to the equipment? (do not round any intermediary calculations, and round your final answer to the nearest dollar.)