Problem: get a pet quest...

Well, I have done 5 times the quest "Get a Pet" and tried all the answers for "What is the best way to train your pet?", and guess what... always got failed... no matter what answer i chose
So i have lost about 5 hours of running and about 22k...
is it a bug?
Very Sad... very sad... :( :( :( :(

Q: What is the best way to train you pet?
A: Tell you pet to hit monsters multiple times.

was my first attempt... got failed... going to 6x...