Which one of the following best expresses the main idea of the passage? A. The law will never be complete because new situations will always arise which will require new laws to resolve them. B. The most difficult legal cases are those concerning controversial issues about which trained legal minds have differing opinions. C. The concept of legal principles does not diminish the usefulness of the concept of the open texture of general terms in deciding whether hard cases are legally determinate. D. The concept of legal principles is a deleterious addition to the theory of law since any flaws exhibited by legal rules could also be shared by legal principles. E. The inherent inconsistency of terms used in laws provides a continuing opportunity for judges to exercise their discretion to correct defect and gaps in the law.