Match the terms in Column-$I$ with their descriptions in Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$(A)$ Dominance	$(1)$ Many genes govern a single character.
$(B)$ Co-dominance	$(2)$ In a heterozygous organism, only one allele expresses itself.
$(C)$ Pleiotropy	$(3)$ In a heterozygous organism, both alleles express themselves fully.
$(D)$ Polygenic inheritance	$(4)$ $A$ single gene influences many characters.

• A
  $A-2, B-3, C-4, D-1$
• B
  $A-4, B-1, C-2, D-3$
• C
  $A-4, B-3, C-1, D-2$
• D
  $A-2, B-1, C-4, D-3$