Which of the following is $($are$)$ true?

I. The closeness rating that reflects indifference to the nearness or lack of nearness of two particular departments within a facility layout is a rating of $"$U$".$

II$.$ If two assembly lines build the exact same product by completing the exact same set of tasks, the shorter assembly line $($fewer work stations$)$ will build the product faster than the longer assembly line.

III. A product created through a make$-$to$-$stock processing strategy can be expected to cost less than the same product created through an assemble$-$to$-$order $($ATO$)$ strategy.