Marketing can be defined as:

a. Activities to satisfy a customer's needs
b. Advertising, promotion, and selling
c. Approaches to create, communicate and deliver value in selected markets
d. Activities to satisfy a customer's needs, and advertising, promotion, and selling
e. All of these are correct.

On january 1, jackson, inc.'s work-process inventory account showed a balance of $ 66,500. during the year, materials requisitioned for use in production amounted to $ 70,500, of which $ 67,700 represented direct materials. factory wages for the period were $ 210,000 of which $ 187,000 were for direct labor. manufacturing overhead is allocated on the basis of 60% of direct labor cost. actual overhead was $ 116,050. jobs costing $ 353,060 were completed during the year. the december 31 balance in work-process inventory is