A transport company has 4 trucks of the same type. There are 2 maintenance teams for repairing the trucks after a failure. Each team can repair only one truck at a time and each failed truck is handled by only one team. The times between failures of a truck (lifetime) is exponential with parameter \(\lambda\). The repair times are exponential with parameter \(\mu\). All life and repair times are assumed to be independent. Let \(ho=\lambda / \mu=0.2\). What is the most efficient way of organizing the work:

(1) to make both maintenance teams responsible for the maintenance of all 4 trucks so that any team which is free can repair any failed truck, or

(2) to assign 2 definite trucks to each team?