Which of the following type of PRR requires local anesthesia and liner?

TYPES OF PRR Based on the extent and depth of the carious lesions: a) Type A - Suspicious pits and fissures where caries removal is limited to enamel. b) Type B - Incipient lesion in dentin that is small and confined. c) Type C - Characterized by the need for greater expIoratory preparation in dentin. Key concept Type C Greater exploratory preparation of dentin.  Requires LA. Requires placement of a liner like calcium hydroxide or GIC over the exposed dentin.