A Basic Difference Between a Parliament Such as Great Britain's

 A basic difference between a parliament such as Great Britain's and the U.S.Congress is that 

A)  the principal role of Congress is to debate national issues. 
B)  members of Parliament have more power and higher pay. 
C)  members of Congress are more likely to vote the party line. 
D)  Congress does not select a president. 
E)  members of Parliament have nicer offices.