UPPCS · প্রশ্ন 79

With reference to lichens, which of the following statements is/are correct? 1. Lichens are very good indicators of air pollution. 2. Lichens grow well in polluted areas. Select the correct answer using the code given below.

1. ANeither 1 nor 2
2. BOnly 1
3. COnly 2
4. DBoth 1 and 2