Three monkeys A, B, and C weighing 23, 23, and 20 lb, respectively, are climbing up and down the rope suspended from D. At the instant represented, A is descending the rope with an acceleration of 3.4 ft/sec2, and C is pulling himself up with an acceleration of 3.1 ft/sec2. Monkey B is climbing up with a constant speed of 3.8 ft/sec. Treat the rope and monkeys as a complete system and calculate the tension T in the rope at D.