一元二次方程（x﹣9）²=0的解是[ ]

A．x₁=x₂=9

B．x₁=x₂=3

C．x₁=9，x₂=﹣9

D．x₁=3，x₂=﹣3

"Please don't be angry with me," said Amy laughingly. This made me even _________. [ ]

A. angry

B. angrier

C. angriest