During Harrison Johnson's episode of DKA, why are there high levels of ketones in his blood?
A) Ketones are required to convert glucose into glycogen.
B) The body is releasing ketones to neutralize elevated levels of glucose within the urine and blood.
C) Hyperglycemia signals the muscles to produce ketones as a substitute for insulin.
D) Ketones are released as a source of energy for the tissues, due to their inability to absorb glucose.