數學一題問題 好易者對各位勁人黎講

4)
It is given that the graph of the equation x + ay + b = 0, where a and b are constants, passes through (–1, 3). Which of the following pairs may be the values of a and b?
A.a = –2, b = 1
B.a = –1, b = 4
C.a = 1, b = –3
D.a = 2, b = –7