Consider the hydrated ions of Ti2+, V2+, Ti3+, and Sc3+. The correct order of their spin-only magnetic moment is:

• A. V2+ < Ti2 + < Ti3+ < Sc3+
• B. Sc3+ < Ti3+ < Ti2+ < V2+
• C. Ti3+ < Ti2+ < Sc3+ < V2+
• D. Sc3+ < Ti3+ < V2+ < Ti2+