Correct IUPAC name for H_(3)C-underset(C_(2)H_(5))underset(|)(CH)-underset(C_(2)H_(5))underset(|)(CH)-CH_(3) is.............. .

Correct IUPAC name for H_(3)C-underset(C_(2)H_(5))underset(|)(CH)-und

1.	Correct IUPAC name for H_(3)C-underset(C_(2)H_(5))underset(\|)(CH)-underset(C_(2)H_(5))underset(\|)(CH)-CH_(3) is.............. .
Answer» 2-ethyl-3-methylpentane 3, 4-dimethylhexane 2-sec-butylbutane 2, 3-dimethylbutane SOLUTION :