Help ! With explanation if possible. This course is really hurting my brain.

Question 3 Select one answer. A person trying to gain access to a bank vault must pass through a series of three security 10 points doors. If an attempt to pass through a door is a failure, then the person will not make any further attempts. Let P denote a successful pass and F denote a failed pass. What is the sample space for this random experiment? A. OS= {F, PF, PPF} B. OS = {F, FP, FFP, FFF} C. OS = {F, PF, PPF, PPP} D. OS ={PPP, FPP, PFP, PPF, FFP, FPF, PFF, FFF} E. OS = {P, PP, PPP} Question 4 A person in a casino decides to play blackjack until he wins a game, but he will not play more Select one answer. than 3 games. Let W denote a win and L denote a loss. What is the sample space for this 10 points random experiment? A. OS = {W, LW, LLW} B. S = {WWW, WWL, WLW, , WLL, LWW, LWL, LLW, LLL} C. OS = {W, WW, wWW} D. S = {W, WL, WWL, www} E. S = {W, LW, LLW, LLL}