<prompt> According to Atwood residual ridge classification order V denotes:High well-rounded ridgeLow well-rounded ridgeKnife-edge ridgeDepressed ridge  <response>: Order I Pre-extraction-alveolus bearing toothOrder II Post-extraction-alveolus after extractionOrder III High, well rounded-high alveolar processOrder IV Knife-edge-High, narrow alveolar processOrder V Low, well-rounded-rounded flat alveolar processOrder VI Depressed-concave flat alveolar process. 