People an'ive t_o a restaurant according to a rate 60 Poisson process. In the M there are 2 cash registers with lines or queues in front of each one. Before customers get in one of the queues, a "load-balancing\" employee rolls a fair 6 sided die. If it comes up 1 or 2, the customer is sent to the left queue while otherwise they are sent to the right queue. Assume the load-halancer rolls quickly and causes negligible or zero M to customers. The swivel process to the left queue is: (a) a Poisson process of rate 60. (b) a Poisson process of rate 30. (c) a Poisson process of rate 20. (d) a Bemoulli process of rate 50. (e) a Elemoulli process of rate 30. (f) a Bernoulli process of rate 20