Rye Bread Must Normally Contain Wheat Flour Because __________

Rye bread must normally contain wheat flour because __________.

A) rye flour does not develop gluten
B) the flavor of rye flour alone is unpleasant
C) without wheat flour, rye bread stales almost immediately
D) rye meal (pumpernickel) is so fine that a dough made from it will not stay together during the kneading process