GMAT Sentence Correction (SC) | Re: With construction costs estimated at $3.2 billion,

With construction costs estimated at $3.2 billion, the new power stationis to provide jobs for 2,300 people at the peak of construction, will begin to produce power in 1988, and reach completion in 1991.

(A) is to provide jobs for 2,300 people at the peak of construction, will begin to produce power in 1988, and reach
(B) is to provide jobs for 2,300 people at the peak of construction, is to begin to produce power in 1988, reaching
(C) will provide jobs for 2,300 people at the peak of construction,