At PH 70, Converting a Proline to Hydroxyproline, Will Have What Effect

Multiple Choice

At pH 7.0, converting a proline to hydroxyproline, 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.