Answer:C-Both Technicians are correct.
Step-by-step explanation:This is because, the independent rear suspensions IRS system has a lower unsprung weight which improves cornering performance of a vehicle by causing less amount of pull against the driver’s steering
Also Independent rear suspension provides batter handling and makes a vehicle very stable by allowing each wheel of a vehicle move independently which makes it easy to move on bad surfaces on the road unlike ,a solid rear axle suspension system, whose two wheels on the axle are interconnected,such that when one wheel moves up, the other one gets dragged down, and vice-versa causing handling of the vehicle prove difficult.