How Are the Heavy Chains of Major Histocompatibility Complex (MHC)

Multiple Choice

How are the heavy chains of major histocompatibility complex (MHC) classes I and II molecules transported into the cell membrane?

A) Heavy chains are transported via extracellular fluid.
B) Heavy chains are inserted through the membrane via hydrophobic residues.
C) Heavy chains are inserted through the membrane via hydrophilic residues.
D) Heavy chains are adsorbed onto the membrane via semipermeable methods.