Σ = {a, b}, Consider set of strings consisting of a's and b's starting with the string bab and even number of b's and odd number of a's, write down Regular expression and define Recursive Language for it.

Technician a says that with self-adjusting clutch systems, the release bearing constantly rotates. technician b says that the ball bearing portion of the release bearing should be lubricated with high-temperature grease during routine maintenance. which technician is correct?