The four metals of M, N, X and Y are separately added to hydrochloric acid Reactions only take place in X and Y to produce gas bubbles. When Yis
put into the nitrate solution of X, element X is precipitated out. The relative
atomic mass of N is greater than that of M. When M is put into the nitrate
solution of N, the mass of the solution decreases. The reactivity series for
these four metals is
A. Y> X > M >N
B. Y>X>N>M
C. N>M> X>Y
D. X >Y > M>N​