Aperson can run 5 miles in one stretch and wants to run a 26-mile marathon next year.

what is an appropriate long-term goal for this person?

to run 10 miles in one stretch by the end of the first week

to run 15 miles in one stretch by the end of 6 months

to run 20 miles in one stretch by the end of the first month

to run 26 miles in one stretch by the end of the first month