Each of these contracts except one would likely be considered contracts for an illegal purpose that a judge would be reluctant to enforce. Which one would a judge enforce without any qualms about legality?

Question $20$ options:

a$)$

A contract to purchase $$8000$ worth of equipment for producing counterfeit credit cards.

b$)$

A contract that requires a debtor to pay $10\%$ interest per month.

c$)$

A contract to purchase $$400000$ worth of cigarettes for a convenience store chain.

d$)$

A contract to burn down business premises to facilitate an insurance claim.