Four students factor the original expression 21x−7y.
The table shows the students’ responses.



Which statement is true?

Responses

Only Student 1
creates a factored expression equivalent to the original.
Only Student , 1 , creates a factored expression equivalent to the original.

Only Student 3
creates a factored expression equivalent to the original.
Only Student , 3 , creates a factored expression equivalent to the original.

Students 1
and 2
create factored expressions equivalent to the original.
Students , 1 , and , 2 , create factored expressions equivalent to the original.

Students 3
and 4
create factored expressions equivalent to the original.
Students , 3 , and , 4 , create factored expressions equivalent to the original.