GMAT Sentence Correction (SC) | A year advantage in a new computer product or process being

Given :
A year advantage in a new computer product or process being introduced can give a company a significant edge on its competitors.

a. A year advantage in a new computer product or process being introduced
b. Introducing a new computer product or process by a year earlier
c. A year's advantage to introduce a new computer product or process
d. To introduce a new computer product or process by a year earlier

Not sure about other flaws in the given statement, but i tried to balance the
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