The National Assembly Is Seen as Being Ineffective in Checking

The National Assembly is seen as being ineffective in checking executive power because

A) ANC MPs, the largest group of parliamentarians, have tended to defer to the executive.
B) most legislation is drafted by government ministers, not MPs.
C) due to the country's electoral system, MPs hold their seats at the will of party leadership.
D) the executive has shown itself able to stifle legislative investigations.
E) All of the above statements are true.