what is the name of this alkane?\n1 - methylbutane\n2 - methylbutane\n1,2 - triethylethane\n1…

what is the name of this alkane?\n1 - methylbutane\n2 - methylbutane\n1,2 - triethylethane\n1 - dimethylpropane
Answer
Explanation:
Step1: Identify the longest carbon - chain
The longest continuous carbon - chain has 4 carbon atoms. So, the parent alkane is butane.
Step2: Locate the substituent
There is a methyl group ($-CH_3$) attached to the second carbon atom of the butane chain.
Answer:
B. 2 - methylbutane