Is x = 0 a valid potential solution to the equation log(x + 7) + log(x − 3) = 17?
Question 17 options:

A)

No, because it isn't possible to take the logarithm of zero: log(0).

B)

No, because 17 isn't divisible by 7 or 3.

C)

No, because when x = 0, the second term is log(− 3), and it's impossible to take the logarithm of a negative number.

D)

Yes, logarithms are valid for any integer.