No 0.1/100 cannot be simplified
Maybe c or A not completely sure try looking for the one you think it is and try reading it again
The derivative of 
in the direction of a vector 
is
With 
, we get
and 
,
Then
You have to have the same denominator for both fractions, so I would multiply 3/4 by 3 that would give you 9/12 and the other one is 7/12. This means that the final answer would be 9/12>7/12.
