If the carbon compound has many functional groups, then the order of preference while naming according to IUPAC nomenclature is
A) CONH2 > CHO > NH2 > — COOH
B) — COOH >CONH2 > CHO NH2
C) — CHO > CONH2 > COOH > NH2
D) — COOH > CHO > NH2 > CONH2
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