Concept:Classical federalism is judged by the standards of K.C. Wheare.Explanation:Classical federalism requires component units to voluntarily surrender certain powers to a central government.K.C. Wheare, a leading scholar of federalism, emphasised this voluntary submission of rights as a key test.Therefore, Nigeria's federalism is often measured against Wheare's classical model and seen as flawed.Answer:K.C. Wheare (Option B).