Which of the following random variables are candidates to be modeled with a Poisson distribution:
a) Number of car accidents at an intersection on a Tuesday night.
b) Time it takes a machine to complete a task during a test run.
c) Number of times you get a green ball when randomly picking 4 times (with replacement) from a box with 100 balls of four colors (including green).
d) Number of callers to a company for service on a Monday from 10 to 11 a.m.