A company had credit sales of $30,000 and cash sales of $10,000 during the month of may. also during may, the company paid wages of $12,000 and utilities of $1,800. it also received payments from customers on account totaling $4,000. at the beginning of may, the company had a cash balance of $25,000. what is the company's cash balance at the end of may?
a. $21,200
b. $25,200
c. $39,000
d. $35,000