已知F₁，F₂为椭圆E的两个左右焦点，抛物线C以F₁为顶点，F₂为焦点，设P为椭圆与抛物线的一个交点，如果椭圆离心率e满足|PF₁|=e|PF₂|，则e的值为______．

Has everything _____ can be done ______?

A．what; done　　　

B．that; been done

C．that; already done

D．what; already being done