A properly drafted waiver of liability, when signed by the customer of a business, can form the basis of a defence of voluntary assumption of risk. Which of the following can a waiver do$?$

a$.$ It can protect the business from claims made under the Consumer Protection Act but probably not under the Occupiers Liability Act.

b$.$ It can protect the business from claims made under the Occupiers' Liability Act but probably not under the Business Practices and Consumer Protection Act.

c$.$ It can protect the business from claims made under both the Occupiers' Liability Act and the Business Practices and Consumer Protection Act.

d$.$ Waivers have been ruled ineffective in Canada, but may still be useful as a means of communicating risks to customers.