Dolphins, Inc., has the following estimated quarterly sales for next year. The accounts receivable period is 45 days. What is the expected accounts receivable balance at the end of the second quarter? Assume that each month has 30 days. Q1 Q2 Q3 04 Sales $1,300 $1,500 $1,300 $1,900 Select one: O a. $500 O b. $700 O c. $750 O d. $650 O e. $600