technician A says oil is primarily used to collect contaminants and carry them to the oil filter. Technician B says a breakdown in lubrication occurs on cold startup. Who is correct?

Answer:Both

Explanation:

Both are correct because oil primarily used to collect contaminants and carry them to the oil filter so that used up waste particulates do not enter again in lubricant.

Also breakdown occurs on clod startup of engine such that it can provide lubrication at initial phase.