Consider the following statements concerning centrifugal governors:
1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.
2. Isochronisms for a centrifugal governor can be achieved only at the expense of stability.
3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.
Which of the statements given above is/are correct?
(a) 1 and 2 (b) 2 and 3
(c) 2 only (d) 3 only