4. (2 pts each) Section 2.2 describes strings in Python, including the concepts of "dictionary order (also called "lexicographic order"), concatenation of strings, multiplication of strings by an integer, the in operator, the not in operation, the len() function, and string indexing. Review that material. Expression Result course + 2 Assuming the following assignment statements have been entered at the Python prompt in IDLE to create the three variables below, indicate the value of each of the expressions on the right: (school + '-')+2 qtr(1:3) I qtr > course school = "UCSB" course = "CS8" qtr - "W20" "CS" in school