A patient complains of the discolouration of an upper central incisor. Radiographically, the pulp chamber and the root canal space are obliterated and the periodontal ligament space appears normal. The most appropriate treatment would be to

fabricate a porcelain fused to metal crown.

perform root canal treatment and fabricate a porcelain veneer.

perform root canal treatment and fabricate a post retained porcelain fused to metal crown.

perform root canal treatment and non vital bleaching.

fabricate a porcelain veneer