probabilty question

Question

For a revolver with five chambers and one bullet, write the questions for which each of these solutions are the answer.

Solution A: (4/5)(4/5)(1/5) = 0.13

Solution B: (1/5) + (4/5)(1/5) + (4/5)(4/5)(1/5) = 0.49

Solution C: (1/5) + (4/5)(1/4) + (4/5)(3/4)(1/3) = 0.60

Answer 1

A: what is the probability you shoot yourself the third time you pull the trigger

B: what is the probability you shoot yourself on the 1st, 2nd or 3rd time you pull the trigger with replacement

C: what is the probability you shoot yourself on the 1st, 2nd or 34d time you pull the trigger without replacement