For what reason should you disassemble and then replace the paper feed assembly?

A.
if repeated paper jams occur due to excessive paper skew

B.
if replacing feed rollers and adjusting paper skew sensors do not solve repeated jam errors

C.
if the mediasensor value no longer matches the value on the label located on the paper feed
assembly

D.
the paper feed assembly can be replaced as a full unit but should never be disassembled