Metal X is placed into a colourless aqueous solution of the sulfate of metal Y. A coloured solution then appears and metal Y is found deposited at the base of the beaker. Which row shows elements X and Y and their relative reactivity?
- AX is a transition element; X is more reactive than Y
- BX is a transition element; Y is more reactive than X
- CY is a transition element; X is more reactive than Y
- DY is a transition element; Y is more reactive than X