单项选择题

A.(a)-(4);(b)-(1);(c)-(2);(d)-(3)
B.(a)-(3);(b)-(2);(c)-(4);(d)-(1)
C.(a)-(4);(b)-(3);(c)-(1);(d)-(2)
D.(a)-(2);(b)-(4);(c)-(3);(d)-(1)