Mr. Dela Cruz can take either two roads to the airport from his home (Road A or Road B). Owing to varying traffic conditions that travel times on two roads are not fixed, rather on a Friday around noon that travel times across these roads can be approximated per normal distribution as follows:

Road A: = 54 minutes and = 5 minutes.

Road B: = 57 minutes and = 10 minutes.

Which road should he choose if on Friday noon he must be at the airport within 50 minutes to pick up his wife?