A survey of 255 students was taken at registration. Of those surveyed: 61 students had signed up for a Math course 34 students had signed up for a Humanities course 16 students had signed up for both a Math and Language Arts course 9 students had signed up for both a Math and Humanities course 5 students had signed up for both a Language Arts and Humanities course 5 students had signed up for all three courses 16 students did not sign up for any of these classes How many students signed up for only Language Arts (of these three)?