Tim and Luke start a lawn-mowing business and buy a lawnmower for $325. They plan to charge $25 to mow one lawn. Which inequality can be used to find x, the minimum number of lawns they need to mow if they wish to earn a profit of at least $1000?
A) 25 ≤ 325x + 1000x
B) 25 ≥ 325x + 1000x
C) 25x ≤ 325 + 1000
D) 25x ≥ 325 + 1000