The following qualitative plots depict the first, second and third ionization energies (I.E.) of Mg, Al and K. Among the following, the correct match of I.E. and the metal is

A

X-Al ; Y-Mg ; Z-K

B

X-Mg ; Y-Al ; Z-K

C

X-Mg ; Y-K ; Z-Al

D

X-Al; Y-K; Z-Mg