thescrummaster.co.uk mock quiz for PSM1

I took mock quiz for PSM1 on thescrummaster.co.uk and got the below questions - 

1. The Scrum Master must facilitate the Daily Scrum?  False/True. - I selected True.

2. The Development Team must be no smaller than 3 and no larger than 9 members? True/ False - I selected True

3. Development team has only three members, the duration of daily scrum could be - A. Per Team's Decision B. 3 Minutes C. 15 Minutes. - I selected C - 15 Minutes (Correct Answer A)