busy with doing

[sitifan]

1. I was busy ________ the dishes when you called last night.

(A) to do
(B) to doing
(C) doing
(D) with doing

Source: https://www.ivy.com.tw/column/cont/...kPKm43IexQHkoUZgq3xpAKZbRWXjAEHnjw1tWf0Vc9pLY

The answer to the above question is option C. Is option D also acceptable to native speakers?

 

[5jj]

No.

 

[tedmc]

It's either busy doing something or busy with something.
I think "busy with the dishes" would be okay.