Task: Question Answering
Input (English): Problem: in a village of 2,600 people , 800 people are over 70 years old and 850 people are female . it is known that 40 percent of the females are younger than 70 years old . if no one in the village is 70 years old , what is the probability that a person chosen at random is either a female or younger than 70 years old ? 
Options: a ) 231 / 260 , b ) 117 / 130 , c ) 51 / 65 , d ) 23 / 32 , e ) 11 / 16
Output (English): a