There are three security guards, A, B and C appointed to guard a jewellery shop under the following conditions:
No security guard is called to work for three consecutive days.
A has his off on Tuesday, Thursday and Sunday.
B has his off on Monday, Wednesday and Saturday.
C has his off on Tuesday, Thursday and Sunday.
On which day of the week do all of them work together?
- Sunday
- Saturday
- Friday
- Tuesday