Match each definition with its term.
a)Mean Active Maintenance Time, M(bar)
b)Mean Down Time, MDT
c)Mean Time To Repair, MTTR
A weighted average of corrective and preventive maintenance times	a b c
The average elapsed time (clock hours) between loss of mission capable (MC) status and restoration of the system to MC status	a b c
The average time to perform repair activities for which the contractor has design responsibility	a b c