AMC 10A 2003 Problem 12

A point (x, y) is randomly picked from inside the rectangle with vertices (0,0), (4,0),(4,1), and (0,1). What is the probability that x<y ?

Answer Choices
A. \dfrac{1}{8}
B. \dfrac{1}{4}
C. \dfrac{3}{8}
D. \dfrac{1}{2}
E. \dfrac{3}{4}