Read the following sentence.

i have often wondered why there aren't more discounts provided to we students.

which of the following choices correctly identifies the pronoun error, if any, in the above sentence and accurately revises it?

a.
subject-object mix-up; i have often wondered why there aren't more discounts provided to us students.
b.
pronoun-antecedent disagreement; i have often wondered why there aren't more discounts provided to us students.
c.
pronoun-antecedent disagreement; we have often wondered why there aren't more discounts provided to we students.
d.
the sentence is correct as it is written.