AMC 10 2001 Problem 13

A telephone number has the form A B C-D E F-G H I J, where each letter represents a different digit. The digits in each part of the number are in decreasing order; that is, A>B>C, D>E>F, and G>H>I>J. Furthermore, D, E, and F are consecutive even digits; G, H, I, and J are consecutive odd digits; and A+B+C=9. Find A.

Answer Choices
A. 4
B. 5
C. 6
D. 7
E. 8