The PK₁,pK₂,and PK_R for the Amino Acid Glutamate Are 2 $\alpha$

The pK₁,pK₂,and pK_R for the amino acid glutamate are 2.1,9.5,and 4.1,respectively.At pH 11.0,glutamate would be charged predominantly as follows:

A) " $\alpha$ -carboxylate +1, $\alpha$ -amino 0, $\gamma$ -carboxylate +1,net charge +2"
B) " $\alpha$ -carboxylate −1, $\alpha$ -amino +1, $\gamma$ -carboxylate −1,net charge −1"
C) " $\alpha$ -carboxylate 0, $\alpha$ -amino 0, $\gamma$ -carboxylate 0,net charge 0"
D) " $\alpha$ -carboxylate +1, $\alpha$ -amino −1, $\gamma$ -carboxylate +1,net charge +1"
E) " $\alpha$ -carboxylate −1, $\alpha$ -amino 0, $\gamma$ -carboxylate −1,net charge −2"