Megan and Shana race against each other with the winner of each race receiving x gold coins and the loser receiving y gold coins. (There are no ties and x and y are integers with x>y>0.) After several races, Megan has 42 coins and Shana has 35 coins. Shana has won exactly 2 races. The value of x is
Answer Choices
A. 3
B. 7
C. 5
D. 6
E. 4