A Firm Uses Labor and Capital $( L , K )$

Multiple Choice

A firm uses labor and capital, $( L , K )$ , to produce an output. The hourly cost of labor is $10, and the hourly cost of capital is $50. Which of the following combinations of labor and capital hours of use represent points on the firm's $100,000 isocost line?

A) (10000, 2000)
B) (2000, 10000)
C) (1000, 1800)
D) (1000, 1000)