Select the phrase/connector from the given three options which can be used to form a single sentence from the two sentences given below, implying the same as expressed in the statement sentences.
Online education is providing a critical service in these times. It is not a silver bullet.
1. While providing a critical service in these times
2. While a silver bullet
3. While online education is
1
Only 1
2
Only 2
3
Only 3
4
Both 1 and 2
5
Both 2 and 3