Lina and Josh each made a factor tree to find the prime factorization of 126.

Which statement explains the accuracy of the students’ work?

Lina’s solution is correct because it expresses 126 as a product of prime factors.
Josh’s solution is correct because the factor tree of every even number must begin with 2 and its factor pair.
Both solutions are correct because they both express 126 as a product of factors.
Neither solution is correct because the factor tree should have begun with 6 and 21.