GKFix MCQ Question

Why is the intermediate formed in S_NAr often described as a 'sigma complex'?

• A. It has a sigma bond between the leaving group and the ring.
• B. It is stabilized by sigma bonding within the ring.
• C. It is a transition state, not an intermediate.
• D. It is formed by the sigma-bonding interaction between the nucleophile and the aromatic ring carbon.