Violation

For amalgam restorations, a 90 cavosurface angle accommodates the 1. condensing of amalgam. 2. compressive strength of amalgam. 3. tensile strength of amalgam. 4. compressive strength of enamel

(1) and (3)

(2) and (4)

(4) only

All of the above

(1) (2) (3)

Please describe the matter of abuse