What is special about the F and J keys on a standard keyboard?

(1 point)
Responses

They have bumps.
They have bumps.

They are in the exact center of the keyboard.
They are in the exact center of the keyboard.

They are the keys that your middle fingers should rest on.
They are the keys that your middle fingers should rest on.

They are the keys between the home row keys.

They are the keys between the home row keys.