This is in Differential Calculus. This is only multiple choice. Provide necessary solution for each items. Thank you and Godbless. Follow the numbering.

16. The hour hand and minute hand of a clock are 1 inch and 1.6 inches long respectively. At what rate are the ends on the hands approaching each other when the time is 2 o'clock? A) 0.095 in/min. C) 0.079 in/min. B) 0.067 in /min. D) 0.088 in/min. 17. A man on a pier holds a rope attached to a boat at a level 12 feet below the man's hands. If 20 feet of rope are out and the boat is drifting away at the rate of 2 ft/s, find the rate at which the rope is passing the man's hands. A) 20vs C) 16 RV/s B) 14 At/s D) 1.8At/s 18. One particle starts at the origin and travels up the y-axis at 5 ft/s. Two seconds later, another particle starts at the origin and travels up the line y = x at the rate of 8 ft/s. At what rate are they separating 2 seconds after the second particle started? A) 5.25 fu/'s C) 5.11 fu/s B) 4.09 fu's D) 4.42 fu/s