Dementia and delirium are very similar due to the fact that they both experience some form of memory loss. The difference between the two is that while memory loss in dementia __________, memory loss in delirium __________.A.affects all ages . . . affects only the elderlyB.can fluctuate throughout the day . . . is usually constantC.is a result from head injury . . . can result from high blood pressureD.is usually constant . . . can fluctuate throughout the day