- AFriday, Saturday or Sunday
- BSunday only
- CSaturday or Sunday
- DThursday, Friday or Saturday
Step-by-Step Solution
31 days = 4 weeks + 3 extra days. A weekday occurs 5 times only if it is one of the first three days of the month. Sunday is among the first three days when the month starts on Friday, Saturday or Sunday.
Answer: A) Friday, Saturday or Sunday