Which of the following is incorrect? a. Newborns have a higher proportion of RBCs than adults. b. More blood may be needed from newborns to provide enough serum or plasma for testing. c. Newborns...

Which of the following is incorrect?

a. Newborns have a higher proportion of RBCs than adults. b. More blood may be needed from newborns to provide enough serum or plasma for testing. c. Newborns have a higher proportion of plasma than adults. d. Newborns and infants are more susceptible to infection than adults.