My prof's reply to my email (I'm always for knowing my grades, no matter how good or bad they are)

The presentation grade will be taken as the CA, but it wouldn’t be disclosed for it is too close to the examination and may destabilize your mood and momentum in your study.

Your group has done well in presentation.
Best wishes in your coming examination

I really hope he meant it =) and not just to 'stabilise my mood and momentum'

I love reading the microbes book though, it's like some bedtime story, although with gross pictures.