$38$ Assembing a pioduct th an esamplo.of aA$)$ Batch$-$level activity.B$)$ Facility$-$level activity.C$)$ Product$-$level activity.D$/$ Onit$-$level activity,

As sembling a product is an example of $a.$

A$)$ Batch$-$level a$$vity$.$

B$)$ Facility$-$level activity.

c$)$ Product$-$level activity.

or Ohit$-$level activity.