D Question 6 If one wishes to use square brackets to access elements in a dictionary, within the square brackets one must put O a key value to search for O a string O the result of a call to an index0 method O an integer D Question 7 Which of these is not automatically available for lists in Python? O max(list) identify the largest value in the list O len(list) -- determine the number of values in the list O sum(list) compute the sum of values O average(list) compute the average of values