Help need answered ASAP!There are two routes Lucas can take to walk to school. Route A is 2 1/8 miles and is 3/8 mile longer than route B. The equation b+3/8=2 1/8 can be used to represent this situation, where b is the length of route B. How many miles will Lucas walk if he takes route B?A: 1 1/2 milesB: 1 3/4 milesC: 2 1/4 milesD: 2 1/2 miles