33. A greenhouse contained both 6-inch-high geraniums and 3-inch-high geraniums. The 6-inch-high geraniums were taken out of the greenhouse in early spring and grew at a rate of 1 inch per week. The 3-inch-high geraniums remained in the greenhouse and grew at a rate of inches per week. After the 6-inch-high geraniums were taken outside, in how many weeks were both groups of geraniums the same height?

A.

C.

E.