Which sentence below is correctly punctuated? (4 points) Question 25 options:

1)

Only those students, who have signed permission slips, will be allowed to participate.

2)

Only those students who have signed permission slips, will be allowed to participate.

3)

Only those students, who have signed permission slips will be allowed to participate.

4)

Only those students who have signed permission slips will be allowed to participate