单选题
【正确答案】 B
【答案解析】[*]
Quantity A Quantity B Compare Eliminate
Let c = 1
and d =-1		 (1 + -1)2 = 0 12 + (-1)2=
1+1=2		 B is greater A and C
Let c= 3
and d = -5		 (3 + -5)2 =
(-2)2 = 4		 32 + (-5)2 =
9 + 25 = 34		 B is greater
Both times Quantity B was greater: choose B.