The haematocrit (packed cell volume)

 A. True  Since red cells are heavier than plasma.

B. True  This gives a slightly lower value than centrifugation which traps a little plasma between cells.

C. True  Due to loss of plasma and interstitial fluid.

D. False  It falls as extracellular fluid and hence plasma volume increases.

E. False  Though individual RBCs are large, total red cell mass is decreased.