Answer: D
Step-by-step explanation:
Just do 7 x 88 LOL
In general, the volume

has total derivative

If the cylinder's height is kept constant, then

and we have

which is to say,

and

are directly proportional by a factor equivalent to the lateral surface area of the cylinder (

).
Meanwhile, if the cylinder's radius is kept fixed, then

since

. In other words,

and

are directly proportional by a factor of the surface area of the cylinder's circular face (

).
Finally, the general case (

and

not constant), you can see from the total derivative that

is affected by both

and

in combination.
1, 3, and 5 because you can multiply all these numbers to get 15
The answer is.................
A!!!!!!!!!!!!