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.
Coronavirus is said to pass from person to person in tiny droplets called aerosols. The coronavirus is responsible for the COVID-19 pandemic.
1. the coronavirus is said to pass from
2. the coronavirus responsible for the COVID-19 pandemic
3. COVID-19 pandemic was caused
1
Only 1
2
Only 2
3
Only 3
4
Both 1 and 3
5
None of these