Challenge: A salesperson works 40 hours per week at a job where he has two options for being paid. Option A is an hourly wage of $18. Option B is a commission rate of 4% on his weekly sales. How much does he need to sell this week to earn the same amount with the two options? The salesperson is told that he has to choose an option at the beginning of the week. Which option would you recommend? Explain your reasoning.