Phosphorus is a major constituent of:
$(1)$ Biological membranes
$(2)$ Nucleic acids
$(3)$ Cellular energy transfer systems
$(4)$ Protein synthesis

  • A
    All of the above
  • B
    Both $(1)$ and $(2)$
  • C
    $(2)$,$(3)$,and $(4)$
  • D
    $(1)$,$(2)$,and $(3)$

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