Can you balance this chemical equation?

(NH4)_2 Cr_2O_7 ===> Cr2O3 + N2 + 4H2O

I think to balance this equation, all you need do is put a 4 in front of the water.

Element          # Right       #Left

N                          2                2

H                          8                8

Cr                         2                2

O                          3+4            7

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

answera compound;