Which of the following is the most appropriate treatment sequence?

When coronal structure is grossly compromised but the root is sound, the staged treatment is: RCT ÔåÆ post (for retention of the core only, not reinforcement) ÔåÆ core build-up ÔåÆ full-coverage crown with at least a 1.5–2 mm circumferential ferrule. Fiber posts are typically preferred in the esthetic zone; cast posts are stiffer. The ferrule is the single most critical biomechanical factor.