The following statements about nerve metabolism excitation and conduction are true except:

• A. Nerve fibre can be excited under anaerobic conditions.
• B. Nerve conduction proceeds in the absence of oxygen and development of action potential does not depend on metabolism immediately.
• C. In the absence of oxygen, action potential can be generated and nerve conduction proceeds, but later, it fails as the \[N{{a}^{+}}\] pump cannot operate.
• D. At rest, the oxygen consumption in the brain is lesser than what is seen in a nerve.