Now for the million-dollar question, who did it?

WASHINGTON — Disgraced ex-CIA chief David Petraeus told lawmakers yesterday that early US intelligence fingered al Qaeda-affiliated terrorists — not crazed protesters — for the deadly attack on the US consulate in Benghazi.

But references to “al Qaeda” and “extremist” were omitted from the unclassified talking points once it left the CIA and went to the White House, said lawmakers who heard Petraeus’ bombshell closed-door testimony before the House and Senate intelligence committees.

“Nobody knows where it was changed,” fumed Rep. Pete King (R-LI), a member of the House Intelligence Committee.

“It was nobody in the intelligence community, so it goes to the Justice Department, State Department, White House — somewhere along the line,” he said.