You discover an enzyme with a hydrophobic pocket and 2 charged residues, Lys80 and Asp92, within the pocket. By name or number, identify all of the following three statements that are true about these residues: 1) The pKa of the Asp92 is higher than the pKa of free aspartate in water 2) The pKa of Lys80 is higher than the pKa of free lysine in water 3) The mutation Lys80 to Val80 would likely NOT destabilize the protein