Hubbard Et Al

Hubbard et al.'s 'helpful techniques when assessing alternatives' include:

A) brainstorming,devil's advocacy,expert plan,dialectic materialism,simulation,war games
B) brainstorming,devil's advocacy,simple plan,dialectic enquiry,nominal group technique
C) brainstorming,nominal groups,devil's advocacy,expert plan,dialectic enquiry,simulation,war games
D) brainstorming,devil's advocacy,simple plan,didactic enquiry,nominal group technique