The "Yes - Markets Self-Adjust" and "No - Markets Fail

The "Yes - Markets Self-Adjust" and "No - Markets Fail Often" camps agree

A) that fiscal policy can affect aggregate supply.
B) that tax cuts have some supply-side incentive effects.
C) that externalities from research and development create a role for government in correcting market failure.
D) that education and training have positive externalities.
E) on all of the above.