Threshold for Biology ?!

[Romeo10]

Can some1 please tell what is the A grade threshold for bio 21 and 31 ???
Plz if any1 knows from a teacher and not a GUESS fron his own .... Please share here cuz im worried as the 2 exams ( 21 , 31 ) were hard and tough !!!
Note : Variant 1

 

[libra94]

teachers will also guess
they wont know the exact threshold fr A grade
well i think for 31 it must be 27-31, question 1 was a disaster
and for 21, it will be around 46-50

 

[aislam17]

I have checked out three forums and the threshold will be around 42-45