Few of the Four Prerequisite Conditions Required to Achieve Optimum

Few of the four prerequisite conditions required to achieve optimum benefits from JIT includes:
(i) Stable and level production schedules;
(ii) Large and less focused factories;
(iii) Smaller batch or lot sizes and increased changeover times;
(iv) Non-repetitive manufacturing.

A) All of the above
B) (i) and (ii) only
C) (i) and (iii) only
D) (i) only