若 (a+3)2(a+3)^2(a+3)2 与 ∣b−1∣|b-1|∣b−1∣ 互为相反数,则( )。 A. a=−3,b=−1a = -3, b = -1a=−3,b=−1 B. a=−3,b=1a = -3, b = 1a=−3,b=1 C. a=3,b=1a = 3, b = 1a=3,b=1 D. a=3,b=−1a = 3, b = -1a=3,b=−1