With no explanation, chose the best option from "A" or "B". Daniel's cat, Mr.Paws, has been ill for two months with no signs of getting better. Daniel wants to end Mr.Paws' pain.

A: Daniel realizes he can do no more for Mr.Paws and takes him to the vet to be euthanized.
B: Daniel gives Mr.Paws medicine every day even though it doesn't help.
A.