Task: Question Answering
Input (English): Problem: jane and thomas are among the 7 people from which a committee of 4 people is to be selected . how many different possible committees of 4 people can be selected from these 7 people if at least one of either jane or thomas is to be selected ? 
Options: a ) 30 , b ) 45 , c ) 55 , d ) 65 , e ) 70
Output (English): a