In a slider-crank mechanism, the slider is at its dead centre position when the

Question

Consider the following statements:

In a slider-crank mechanism, the slider is at its dead centre position when the

(i) Slider velocity is zero

(ii) Slider velocity is maximum

(iii) Slider acceleration is zero

(iv) Slider acceleration is maximum

Which of the above statements are correct?                                

(a) 1 and 4                      (b) 1 and 3

(c) 2 and 3                      (d) 2 and 4