题目单项式−4a2b-4a^{2}b−4a2b与单项式2ba22ba^{2}2ba2的和是（ ）A.−2ab-2ab−2abB.−4a2b+2b2a-4a^{2}b+2b^{2}a−4a2b+2b2aC.−2a2b-2a^{2}b−2a2bD.−2a3b3-2a^{3}b^{3}−2a3b3知识点：提公因式法章节：数与式 / 因式分解
