Match the below

Question

match the items in columns I and II

List I

P. Higher kinematic pair

Q. Lower kinematic pair

R. Quick return mechanism

S. Mobility of a linkage

List  II

Grubler’s equation

Line contact

Euler’s equation

Planer

Shaper

Surface contact

        P     Q     R     S

  a)   2     6     4     3

   b)   6     2     4    1

   c)  6     2     5     3

   d)   2     6     5    1