已知|3a﹣2b﹣12|+（a+2b+4）²=0．则（　　）

A：$\left\{\begin{array}{c}a=0\\ b=1\end{array}\right.$

B：$\left\{\begin{array}{c}a=2\\ b=-3\end{array}\right.$

C：$\left\{\begin{array}{c}a=-3\\ b=2\end{array}\right.$

D：$\left\{\begin{array}{c}a=-2\\ b=-3\end{array}\right.$