3. Which of the following are the benefits of setting work standards? (i) It acts as basis to evaluate worker's performance. (ii) It helps in planning and scheduling tasks. (iii) It helps a manager assign equal amount of work to all the employees.

(a) (i) & (ii)

(b) (i) & (iii)

(c) (ii) & (iii)

(d) (i), (ii) and (iii)