Quattro Makes All Sales on Account, Subject to the Following

Quattro makes all sales on account, subject to the following collection pattern: 30% are collected in the month of sale; 60% are collected in the first month after sale; and 10% are collected in the second month after sale. If sales for April, May, and June were $60,000, $80,000, and $70,000, respectively, what were the firm's budgeted collections for June?

A) $21,000.
B) $60,000.
C) $69,000.
D) $75,000.
E) $80,000.