n and weighing."' Farmington Country Club v. Marshall, 47 Va. App. 15, 26, 622 S.E.2d 233, 239 (2005), quoting Hungerford Mech. Corp. v. Hobson, 11 Va. App. 675, 677, 401 S.E.2d 213, 215 (1991). p12] "The probative weight to be accorded medical evidence is for the Commission to decide; and if it is in