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.