What is worst LA grade A or grade C esophagitis?

In Los Angeles (LA) classification for esophagitis, Grade A is considered less severe than Grade C. Grade A esophagitis involves one or more mucosal breaks that are less than 5 mm in length, while Grade C involves larger mucosal breaks that are more than 5 mm and may be more extensive, leading to greater symptoms and complications. Therefore, Grade C esophagitis is generally regarded as worse than Grade A.