It would be funny because . I will not be good
        
             
        
        
        
A would be the correct answer. Its the only one to make sense since you are trying to solve the conflict!
        
                    
             
        
        
        
Work= (force)(distance)
178= m(9.81)x0.5
178=m(4.905) 
178/4.905=m
His mass is 36.3 kg
        
                    
             
        
        
        
Current flows from High Potential (Positive) to Low potential (Negative)
So, option D is your answer!
Hope this helps!