请教nn一道语法题...谢谢:)

Bob Wilber became Sidney Bechet.s student and protege when he was nineteen and , for a few years in the 1940's,came as close to being a carbon copy of the jazz virtuoso in performance as anyone has ever come.

A  as anyone has ever come

B  as anyone ever had been

C as anyone had done

D that anyone ever did

E  that anyone ever came

为什么是现在时...选A呢?