Question

My friends don’t understand why I love my truck it is a 1947 Studebaker in pristine condition.

Which revision corrects the sentence error above?
My friends don’t understand why I love my truck; it is a 1947 Studebaker in pristine condition.
My friends don’t understand why I love my truck; but it is a 1947 Studebaker in pristine condition.
My friends don’t understand why I love my truck and, it is a 1947 Studebaker in pristine condition.
My friends don’t understand why I love my truck, it is a 1947 Studebaker in pristine condition.

Answer 1

I would believe that the first one would be the best one.

Answer 2

The fist revision should be correct.