What is the secondary mode of detection for the microwave fence sensor?

Match the following standards with their use:

I. H.261 II. H.264/MPEG-4 III. H.320 IV. H.323 V. H.324 A. used with traditional telephone systems and mobile devices B. used with standard PSTNs, digital networks, T1, and satellite networks C. early video compression codec standard D. most recent video compression codec standard E. used with LANs

A set of instructions that accomplish a specific task is called a(n) ________

A) end sub B) sub procedure C) event D) edit sub