Sentence Correction

In addition to negotiating the North American Free Trade Agreement, Mexican President Carlos Salinas reformed the Clerical Laws, which had forbidden priests to vote and had kept the Catholic church from owning land.

(A) reformed the Clerical Laws, which had forbidden priests to vote and had kept
(B) had reformed the Clerical Laws, which had forbade priests to vote and had kept
(C) reformed the Clerical Laws, which had forbade priests to vote and had kept
(D) reformed the Clerical Laws, which had forbade priests to vote and kept
(E) was reforming the Clerical Laws, which forbade priests to vote and kept