If a, b, c and d satisfy the equationsa + 7b + 3c + 5d = 0,8a + 4b + 6c + 2d = 42a + 6b + 4c + 8d = 4,5a + 3b + 7c + d = 4,then (a + d) = ? (b + c)

• A. 0
• B. 1
• C. 1
• D. 4