What is the probability of Bart choosing Rock that makes Lisa indifferent in choosing her strategies?

Question 19 See the game below and answer questions 19 to 21. Lisa chooses row and Bart chooses column. Not yet answered Rock Paper Scissors Marked out of 1.00 Flag question Rock 0, 0 1, -1 -1, -1 Paper -1, 0 0, 0 1, 1 Scissors -1, 1 -1, 1 0, 0 What is the probability of Bart choosing Rock that makes Lisa indifferent in choosing her strategies? Select one: O a. 2/3 O b. 1/3 O c. 1/2 O d. 1 O e. 3/5 Clear my choice Question 20 What is the probability of Bart choosing Scissors that makes Lisa indifferent in choosing her strategies? Not yet answered Marked out of 1.00 Select one: Flag question O a. 2/3 O b. 1/3 O c. 1/2 O d. 1 O e. 3/5