Which Exam takes the longest to revise for?

Hello
I was just wondering which exam you would say was the hardest/ takes the most time to learn and revise? On AAT Lvl 2
BA1, BA2, BC, WEAF, CA
Thanks
I was just wondering which exam you would say was the hardest/ takes the most time to learn and revise? On AAT Lvl 2
BA1, BA2, BC, WEAF, CA
Thanks
Comments
It really depends on what you know, I found probably WEAF was the worst as it is not really number crunching. CA is ok if you have used Sage and computer accounts but could be a little daunting if not.
Regards
Jan