An underweight 4 -year-old boy was brought to the emergency in a semi conscious state. His blood glucose, urea and glutamine were abnormally low, acetoacetate was elevated but lactate was normal. He was admitted to I.C.U. where his blood glucose was increased by injection glucagon. Which metabolic pathway is most likely deficient in this child ?
A) Hepatic gluconeogenesis
B) Skeletal muscle glycogenolysis
C) Adipose tissue lipolysis
D) Skeletal muscle proteolysis