Both ORM and MRO are indirect costs. Regarding indirect material purchasing, which of the following statement$($s$)$ is$/$are correct?

I$)$ System contracting is a stockless inventory method for ordering and stocking MRO and related items.

II$)$ MRO involves purchasing office equipment, furniture, office supplies, computers and janitorial suppliers.

III$)$ ORM involves purchasing office equipment, furniture, maintenance services, forms, office supplies.

IV$)$ MRO has higher percentage of single source than ORM, and therefore, requires less vendor performance measurements.

V$)$ Like ORM, MRO is also indirect purchasing, so it is advisable to lump ORM and MRO together.

Only II and IV are correct.

Only I, III, and V are correct.

Only I and III are correct.

Only I, II$,$ IV are correct.