What will be printed? def mystery (letters): r = [ ] for i in range (len (letters)): r.append(letters [len (letters) - i - 1]) return r if name == main ch['a', 'b', 'c'] print (mystery (ch)) What will be printed? thisdict = { } "brand": "Ford", "model": "Mustang", "year": 1964 thisdict["color"] print (thisdict) = "red" for x in thisdict: print (thisdict [x])