An examination of Hyong Corporation's inventory accounts revealed the following information:

Raw materials, June 1: 46,000 units
Raw materials, June 30: 51,000 units
Purchases of raw materials during June: 185,000 units

Hyong’s finished product requires four units of raw materials. On the basis of this information, how many finished products were manufactured during June?

a. 70,500.
b. 45,000.
c. 57,750.
d. 47,500.
e. None of the other answers are correct.