$25.$ Jack Jackhammer agrees to defend and indemnify Ben Buildings for injury or damages sustained by third parties as a result of Jack$$s operations on Ben$$s premises. Which of the following accurately describes how Ben$$s defense costs might be covered under Jack$$s CGL policy?

$($Search Chapter $4)$

a$.$ In some cases, Ben$$s defense costs may be covered as damages within the policy limit$.$

b$.$ Ben$$s defense costs will never be covered.

c$.$ Ben$$s defense costs are covered on exactly the same basis as Jack$$s own defense costs.

d$.$ Ben$$s defense costs are covered subject to a $$100,000$ sublimit.