It’s either B or C, I’m not really sure
If I'm right it could be C. IF I'M RIGHT, I'm not totally sure but I hope this helps.
Answer:
The area of the walls is 
Step-by-step explanation:
we know that
The area of the walls is equal to the perimeter of the conference room multiplied by the height of the ceiling
so
=2,160\ ft^{2}](https://tex.z-dn.net/?f=A%3D2%5B40%2B50%5D%2812%29%3D2%2C160%5C%20ft%5E%7B2%7D)
Step-by-step explanation:
3600s=1hr
so, 1hr:1hr
1:1