Garth was injured at work when he slipped while walking down the stairs and he was not able to work for four months. He received disability payments of $1,200 per month for these four months. The annual premiums on the policy were paid 75% by his employer and 25% by Garth. How much of the disability payments are included in his gross income?

Group of answer choices

$ 900

$1,200

$3,600

$4,800