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.
I can't help you. You tell me what's wrong.
1. unless
2. until
3. only
1
Only 1
2
Only 2
3
Only 3
4
Both 1 and 2
5
All 1, 2 and 3