Q3 Consider the following schema of a car renting agency (7.5+7.5= 15) Vehicle(Vno, Vmake, Vtype, Vprice) Driver (Dno. License Year, Experience, State) Drives(Dno, Vno, Date, Start time, End Time) There are two proposals to define primary keys for Vehicle (a) Vno, Vmake and (b) Vno. Which one would you choose and why? a. Write SQL queries to do the following i. Find all vehicles whose price is greater than 2 lakhs and order these by their make in ascending order ii. Find the experience of those drivers who drove vehicle number DL 2C 4745. b. For each of the queries above i. Build the query tree and clearly identify the heuristics used ii. What is the order of execution of operations of each query