Assertion (A): An important feature of film lubrication is that once a lubricant film is formed on the mating surfaced by running the bearing with a lubricant having a high degree of oiliness it is possible to change to a lubricant with a much lower oiliness
Reason (R): Lubricants of high oiliness are liable to decompose or oxidize and hence are not suitable for general lubrication purposes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true