I think it would be B, please let me know if that's wrong!
        
                    
             
        
        
        
A ) if it s dna G with C and A with T so if it s C 32 G its 32 you have only 100% so it should be 100-32-32 =36 A=T so 36=A+T 64=2T T =18
        
             
        
        
        
Need more info can’t really get an answer out of this sorry :/