Indicate whether each of the following membrane proteins releases its protein ligand (R), remains bound to its protein ligand (B), or is degraded in the lysosome along with its protein ligand (D) following receptor-mediated endocytosis. Your answer would be a three-letter string composed of letters R, B, and D only, e.g. RBD.
( ) LDL receptor
( ) Transferrin receptor
( ) EGF receptor