The Posterior Sextants Exhibit Moderate Sub?gingival Calculus Deposits

The posterior sextants exhibit moderate sub?gingival calculus deposits. The clinician plans to complete subgingival calculus removal on the mandibular left posterior sextant. Clinical attachment loss is present with periodontal pockets greater than 4 mm in depth. A class III furcation involvement is present on teeth #18 and #19. Which sequence of periodontal instruments would be MOST effective for subgingival calculus removal in this sextant?

A) Posterior sickle scaler, Gracey curets with miniature working ends and extended shanks, periodontal files
B) Posterior sickle scaler, standard Gracey curets
C) Universal curet with an extended shank, Gracey curets with extended shank lengths, Gracey curets with miniature working ends and extended shanks, Nabers diamond-coated file
D) Universal curet with a short lower shank, standard Gracey curets, Gracey curets with extended shank lengths