What is the iupac name of the following compound

The IUPAC name for the following compound is:
739211
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A 4,6-dimethylheptane
B 1,3,5-trimethylhexane
C 2,4-Dimethylheptane
D 2,4,6-trimethylhexane

Answer:

C 2,4-Dimethylheptane