Detailed Instructions: In this task, you need to provide the correct option for a given problem from the provided options.
Q: Problem: in a group of 400 players some are outdoor players , some are indoor players and some plays both . 350 plays outdoors and 110 plays indoor . how many plays indoor as well as outdoor games .
Options: a ) 70 , b ) 60 , c ) 90 , d ) 100 , e ) 110
A:
b