Given: A metal electrical box contains the following: 3 size 12 AWG conductors; 3 size 10 AWG conductors; one flush switch. The switch is connected to two of the size 12 AWG conductors. There are no other devices or fittings. The size box needed is _____?

Given: A metal electrical box contains the following: 3 size 12 AWG conductors; 3 size 10 AWG conductors; one flush switch. The switch is connected to two of the size 12 AWG conductors. There are no other devices or fittings. The size box needed is _____?