Observe the pKa values (p - pKa) of the given amino acid. Which form of this amino acid will exist in aqueous solution at pH = 8?
A) As dication (pKa = 1.5)
B) As monocation (pKa = 4.0)
C) As zwitterion (pKa = 8.5)
D) As monoanion (pKa = 10.0)