Multiple Select Question

Select all that apply

What RULE or law did the court apply in the Frontier Leasing v Links Engineering case? $($Choose THREE correct answers$)$

Multiple select question.

Under estoppel, a principal is liable if he causes a third party to believe an agent has the authority to act

Under estoppel, a principal is liable if has notice a that a third party believes an agent has authority and does not give notice to the contrary

A principal may be liable when he knowingly accepts $($or ratifies$)$ the benefits of a transaction entered into by one of his agents.

A principal may be liable when he unknowingly accepts $($or ratifies$)$ the benefits of a transaction entered into by one of his agents