【单选题】

The removal/installation portion shall state clearly the sequence of steps required to remove and reinstall a component or unit, along with precautions to be observeD.

A、The removal/installation portion shall state clearly the sequence of steps required to remove and reinstall a component or unit. This portion shall also state precautions to be obeyeD.
B、The removal/installation portion shall state clearly the sequence of steps required to remove and reinstall a component or unit. This portion shalln’t include precautions to be obeyeD.
C、The removal/installation portion shall hardly state the sequence of steps required to move and reinstall a component or unit. This portion shall also include precautions to be watcheD.