Given below are two statements.

Statement-I:  During aerobic respiration, ETS regenerates co-enzymes such as \(NAD ^{+}\) and \(FAD ^{+}\) from their reduced forms \(NADH + H ^{+}\) and \(FADH _2\).
Statement-II: During aerobic respiration, ETS generates major amount of energy in the form of ATP molecules 
In the light of above statements choose the correct answer from the options given below. 

1. A Both Statement - I and Statement - II are correct.
2. B Both Statement - I and Statement - II are incorrect.
3. C Statement - I is correct but Statement - II is incorrect.
4. D Statement - I is incorrect but Statement - II is correct.