Which of the Following Is True of Fuel Used by the Brain

Which of the following is true of fuel used by the brain?

A) Brain cells are able to use several fuels other than glucose.
B) The brain is always the last in line for new fuel.
C) The flow of blood to the brain can be suspended for at least 5 minutes.
D) Interruption of blood flow for even a few seconds impairs brain function.
E) The body can modulate blood flow to meet the energy needs of the brain.