Which of the following three isomeric alcohols is chiral: 2,2-dimethyl-1-butanol, 2-methyl-2-pentanol, and 2-methyl-3-pentanol?

A) Only 2,2-dimethyl-1-butanol is chiral.
B) Only 2-methyl-3-pentanol is chiral.
C) Both 2,2-dimethyl-1-butanol and 2-methyl-3-pentanol are chiral.
D) Both 2-methyl-2-pentanol and 2-methyl-3-pentanol are chiral.