Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Orchid	$(P)$ Undifferentiated mass of cells
$(2)$ Methylophilus methylotrophus	$(Q)$ Twice the amount of lysine and tryptophan
$(3)$ Callus	$(R)$ High rate of protein production
$(4)$ Hybrid maize	$(S)$ Embryo rescue

• A
  $(1)-(S), (2)-(R), (3)-(P), (4)-(Q)$
• B
  $(1)-(S), (2)-(R), (3)-(Q), (4)-(P)$
• C
  $(1)-(R), (2)-(S), (3)-(P), (4)-(Q)$
• D
  $(1)-(R), (2)-(S), (3)-(Q), (4)-(P)$