A school will spend at most $5,200 to buy new computer equipment for their computer lab. Each new monitor will cost $190 and each new keyboard will cost 6 $75. Which inequality represents all possible combinations of x, the number of monitors, 9 and y, the number of keyboards, the school can buy for the computer lab?

a. 75x+190y≤ 5200
b. 75x+190y<5200
c. 100x+75u<5900