24. Which following statement about pain assessment is true? (A) The McGill Pain Questionnaire (MPQ) has become the most widely used clinical and research tool for measuring pain. (B) The McGill Pain Questionnaire is designed to assess the multidimensional nature of pain experience and has been demonstrated to be a reliable, valid and consistent measurement tool. (C) Descriptors in the McGill Pain Questionnaire fall into 4 major groups, including: sensory, affective, evaluative, and miscellaneous (D) The main disadvantage of VAS is the assumption that pain is a unidimensional experience that can be measured with a single-item scale. (E) All the above are true.