Here is the equation:

Find for

I know that

of

of

and

of

I suppose I use the chain rule to work out the answer?

This is part of an assignment that is reviewing a few things we've covered and earlier today I listed some other problems, I have a multiple choice list of solutions that I'm posting for reference

a.)

b.)

c.)

d.) None of these

Thanks in advance for your help. I'm just a bit intimidated by the possibility of making a mistake in the steps