Please find the below attached question and give the answer properly.

12. Sourav International requires Rs. 150 million in cash for meeting its transaction needs over the next two months, its planning horizon for liquidity decisions. It currently has the amount in the form of marketable securities that earn 9 percent annual yield. The conversion of marketable securities into cash entails a fixed cost of Rs. 6,000 per transaction. What is the optimal conversion size as per Baumol model