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

Column $X$	Column $Y$
$(1)$ Unicellular bacteria	$(P)$ Chlamydomonas
$(2)$ Unicellular algae	$(Q)$ Yeast
$(3)$ Unicellular fungi	$(R)$ Euglena
$(4)$ Unicellular protozoa	$(S)$ Bacillus

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