Directions: Read the following sentence to determine if there is any grammatical or contextual error within it. If there is an error, it will be in one part of the sentence. Identify the part in which the error exists and mark it as your answer. Please consider the part in bold as grammatically correct. If there is no error, select E, i.e., 'No error' as your answer. Please ignore punctuation errors.

Green hydrogen, produced through electrolysis (A) / using renewable energy sources / like solar or wind, represents the most (B) / environmentally sustainable method for generating hydrogen, (C) / distinct to fossil fuel-derived options. (D) No error (E)