GATE Mechanical Engineering (ME) 2018 Shift 1 Solved Paper

For an Oldham coupling used between two shafts, which among the following statements are correct?
I. Torsional load is transferred along shaft axis.
II. A velocity ratio of $1:2$ between shafts is obtained without using gears III. Bending load is transferred transverse to shaft axis.
IV. Rotation is transferred along shaft axis.