If a Dough Is Sticky, Hard to Work With, and Slightly

If a dough is sticky, hard to work with, and slightly sour, it is because the baker __________.

A) let it ferment too long
B) fermented it at a temperature that was too high
C) either let it ferment too long or fermented it at a temperature that was too high
D) neither let it ferment too long nor fermented it at a temperature that was too high