Read the following information carefully and answer the question given below.

Five courses Mathematics, Physics, Chemistry, Botany and Zoology each of one month duration are to be taught from May to September one after the other though not necessarily in the same order by lecturers Abi, Bala, Chandru, Deepan and Ravi. Abi teaches the course Physics but not in the month of August or September. Bala teaches Mathematics in the month of July. Chandru teaches in the month of May but does not teach the course Chemistry or Botany.

Which course is taught by Deepan?