The exercise is to decide whether the question accepts the proposed suggestion as a correct answer. If yes, write "True", otherwise write "False".
Question: how many canals in mandibular first molar
Suggestion: The portion of the central groove between the central pits is termed the Lewis offset and is mandatory to account for the locations of the buccal and lingual grooves (buccal groove being more mesial than the lingual groove while they are parallel).
