A company purchased $3,200 of merchandise on July 5 with terms 1/10, n/30. On July 7, it returned $350 worth of merchandise. On July 14, it paid the full amount due. The amount of the cash paid on July 14 equals:
a) $350.
b) $2,822.
c) $2,850.
d) $2,818.
e) $3,200.