Consider the following reactions
A. Both X and Y are soame and are 1-methoxy-2-methylpropan-2-ol
B. Both X and Y are soame and are 2-methoxy-2-methylpropan-1-ol
C. X is 1-methoxy-2-methylpropan-2ol and Y is 2-methoxy-2-methylpropan-1-ol
D. X is 2-methoxy-2-methylpropan-2-methylpropan-1-ol and Y is 1-methoxy-2-methylpropan-2-ol