Sensitivity analysis

Hi Sir,
Please could you help me to answer the following, which two statements are correct in sensitivity analysis?

A) it can be used to gain insight into which assumptions or variables in a situation are critical

B) it provides info on the basis of which decisions can be made but it doesn’t point to the correct decision directly

C) As well as identifying how far a variable needs to change, sensitivity analysis looks at the probability of such change

D) it not only assumes that variables can change independently, it also allows to change more than one variable at a time

To me it is A B and C…

Thanks
Leo