Project 2 - Penc_rec

Are we allowed to change the number of data bits in logisim for a MUX gate?
If not, does a 2-data bit MUX equals to 2 regular MUXs(2:1)? Or more?

Aakash told me in the recitation that we can do it.
Moreover, a mux with two data bits equals to 2 regular muxs with one data bit.