A woman rows to a place 24 km distant and come back in 7 hours. She finds that she can row 2 km with the stream in the same time as 1.5 km against the stream. The rate of the stream is?

(A) 1 Km/h
(B) 2 Km/h
(C) 2.5 Km/h
(D) 3 Km/h