Which of the following are inversions of a double slider crank chain?

1). Whitworth return motion 2). Scotch Yoke 3). Oldham's Coupling 4). Rotary engine Select correct answer using the codes given below: Codes:

(a) 1 and 2

(b) 1,3 , and 4

(c) 2 and 3

(d) 2,3 , and 4 .