Which of the following statements below are TRUE for a bottleneck? Why?
i. If there are four activities A, B, C and D in a process with activity times 5, 8, 10 and 6 minutes respectively, irrespective of the demand patterns, Activity C is the bottleneck ii. If there are four machines P, Q, R and S in a process with capacities 10, 20, 6 and 12 units/hour respectively, irrespective of the demand patterns, machine R is the bottleneck iii. If there are four resources X, Y, Z and W in a process with utilizations 20%, 69%, 75% and 43% respectively, irrespective of the demand patterns, resource Z is the bottleneck
A. (i) only
B. (i) and (ii) only
C. (i), (ii) and (iii)
D. (ii) only
E. None of these