How Many Primary,secondary,tertiary and Quaternary Carbon Atoms Are There in the Structure

Multiple Choice

How many primary,secondary,tertiary and quaternary carbon atoms are there in the structure of 2,4,6-trimetylheptane?

A) 5 primary,2 secondary,2 tertiary and 1 quaternary carbon atoms
B) 5 primary,3 secondary,2 tertiary and 0 quaternary carbon atoms
C) 4 primary,4 secondary,2 tertiary and 0 quaternary carbon atoms
D) 4 primary,2 secondary,2 tertiary and 2 quaternary carbon atoms
E) 5 primary,2 secondary,3 tertiary and 0 quaternary carbon atoms