Answer:
B. $12,600
Explanation:
"The company expects 60% of its sales to be credit sales and 40% for cash"
Credit sale for May = $30,000 * 60%
Credit sale for May = $18,000
"70% of the credit sale is collected in following month of sale"
Accounts receivables on 31 May = 70% of credit sale for May
Accounts receivables on 31 May = 70% * $18,000
Accounts receivables on 31 May = $12,600