B

The mandibular lingual bar major connector is conventionally cast in a half-pear (tear-drop) cross-section, and the wax pattern used for casting is a 6-gauge size, providing the required 4-5 mm vertical height for rigidity while tapering toward the gingival margin. Studies comparing connector geometries confirm that the half-pear form gives the greatest stiffness with minimal bulk [Ben-Ur et al., 1999, PMID 10220656].