If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is movng downwards, the acceleration of the lift, is

• A. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.165-1.png">
• B. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.165-2.png">
• C. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.165-3.png">
• D. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.165-4.png">