Which of the Following Is(are) an Example(s) of a Hypertonic

Which of the following is(are) an example(s) of a hypertonic intravenous solution? (NS represents normal saline.)

A) 0.9% NS
B) 0.45% NS with D5 (termed half Normal Saline with Dextrose 5%)
C) a. D5 ½ NS (Dextrose 5% with half NS)
D) a. 2% NS
E) all are hypertonic solutions
F) only b and d are hypertonic solutions