Kimberly wants to complete at least 2/3 of her algebra problems by 8 pm. If she has x algebra problems to complete, which inequality can Kimberly use to determine y, the number of algebra problems she wants to complete by 8 pm.
A. y ≥ x - 2/3
B. y < x + 2/3
C. y < 2/3x
D. y ≥ 2/3x