Kate is allowed to work no more than 20 hours a week. She has already worked 13 hours this week. At most, how many more hours CAN she work? Write an inequality and solve.

A) x + 13 ≤ 20; x ≤ 7
B) x + 13 ≥ 20; x ≥ 7
C) x + 13 < 20; x < 7
D) x + 13 > 20; x > 7