as for this why do u think it's C or D

? when function is max or min ? and you should not have any problem with that

if you don't know say

but you are on the right track

it's correct answer (one of those)

as for this

odd function is function that satisfy $\displaystyle f(-x) = -f(x) $ and even function is $\displaystyle f(-x)=f(x) $ meaning when you put in you function instead of x you put (-x) in places of every x that is there in function, and see which condition does it satisfy

P.S. you need function that does not satisfy any of that two conditions