Which sentence best corrects the inappropriate shift in verb tense?

The window slammed shut after the crank to hold it up falls out.
The weindow slammed shut after the crank to hold it up fell out.
The window slammed shut after the crank to hold it up fall out. .
O The window slammed shut after the crank to hold it up is falling out.
The window slammed shut after the crank to hold it up will fall out.​