Assertion: The name of the hybrocarbon
`(CH_(3))_(2)CHCH_(2)CH_(2)CH(CH_(3))CH_(2)CH_(3)`
is 2,5-dimethylheptane and not 3,6-dimethylheptane.
Reason: Numbering should be done in such a way that sum of the locants on the parennt chain is lowest possible number.
A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false.
D. If both assertion and reason are false.