Sentence Correction

The preliminary agreement to what was to be the Treaty of Utrecht was not to be signed until September 1711, and the final treaty in March 1713, but the peace process started moving before the end of 1710.

(A) to what was to be the Treaty of Utrecht was not to be signed until September 1711, and the final treaty in March 1713, but the peace process started moving

(B) to what was to be the Treaty of Utrecht was not to be signed until September 1711, but the peace process started to move before the final treaty in March 1713

(C) to what was the Treaty of Utrecht was not signed until September 1711, and the final treaty in March 1713, but the peace process had started to move

(D) of what was the Treaty of Utrecht was not signed until September 1711, and the final treaty in March 1713, but the peace process had started moving

(E) of what was to be the Treaty of Utrecht was not to be signed until September 1711, and of the final treaty in March 1713, but the peace process was started moving [/b]

B,C and D can be eliminated as C and D uses 'Had' when their is only one event
and B doent sound good

among A and E i go with A

Is the answer A?