At PH 70, Converting a Glutamic Acid To Acid $\gamma$ -Carboxyglutamate, Will Have What Effect on the Overall Charge of Will

At pH 7.0, converting a glutamic acid to $\gamma$ -carboxyglutamate, will have what effect on the overall charge of the protein containing it?

A) It will become more negative
B) It will become more positive.
C) It will stay the same.
D) There is not enough information to answer the question.
E) The answer depends on the salt concentration.