Task: Question Answering
Input (English): Problem: there is a 20 % chance sandy will visit china this year , while there is a 60 % chance that she will visit malaysia this year . what is the probability that sandy will visit either china or malaysia this year , but not both ? 
Options: a ) 40 % , b ) 48 % , c ) 56 % , d ) 64 % , e ) 72 %
Output (English): c