1 pts Question 13 Given the following Python code (Listing 4): 1 2 3 4 5 def q23 (astr): "'' (str)-> (list of str) countd - 1) for item in astr: if item in countd: countd[item] += 1 else: countd[item] = 1 countli = countd.values() ct = max (countil) 7 8 9 10 11 12 13 14 15 16 17 18 mli = 0 for item in countd: if countd[item]- ct: mli.append(item) return mli teststraabbbc When 923(teststr) is executed, the value of countd at line 9 is O l'a: 2.b: 3, 'c': 1) O ['a': 11 o l'all O [2,3,1) O none of these options. ola: 2.b: 3,1)