Stereoisomers I and II undergo E2 elimination on treatment with sodium ethoxide in ethanol. One isomer reacts 500 times faster than the other. Also, one isomer gives X as the only product, whereas the other gives Y together with some X. Which of the following statements provides the best assignment of I and II? A) II reacts faster and gives both Y & X
B) II reacts faster and gives only X
C) I reacts faster and gives both Y & X
D) I reacts faster and gives only X