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