【单选题】

It shall be made clear that when the subject system or equipment is installed, the associated Supplement must be in the Pilot's Operating Handbook at all times.

A、Apparently, the Supplement about the subject system or equipment, if installed, must be in the Pilot's Operating Handbook whenever applicablE.
B、You shall know clearly that when the subject system or equipment is installed, the Pilot's Operating Handbook must always contain the related Supplement.
C、When the subject system or equipment is installed, you need to clearly identify the associated Supplement in the Pilot's Operating Handbook at all times.