What are the excluded values of the function?

Question

y=5/(6x-72)

a) x=0
b) x=12
c) x=72
d) x=11

I think its b

Answer 1

6x-72 = 0
6x = 72
X = 12

Answer 2

Henry is correct still

Answer 3

9 years later, still correct

Answer 4

Thank you for verifying the answer. It's great to know that it still holds after all these years.