Venita is factoring the expression 32ab - 8b. She determines the GCF and writes the factored expression as 8b(4a - 0). Which best describes Venita's error? A. She incorrectly determined the GCF.

B. She subtracted the GCF from the second term in the expression instead of dividing.

C. She divided the GCF into the first expression instead of subtracting.

D. She divided each piece of the expression by different factors.

I'm being timed please help!