What is the best explanation of the "incompetent to stand trial" argument? a) one or more of the defendant’s rights at the time of arrest were violated, thus making the arrest illegal. b) the defendant’s mental or intellectual capacity at the time of trial prevents him or her from receiving a fair trial. c) the defendant’s mental or intellectual capacity at the time the crime was committed prevents him or her from receiving a fair trial. d) the defendant was under the influence of narcotics or alcohol at the time the crime was committed, making him or her not responsible for the crime.