What is the key difference between the Project Scope and the Product Scope in project management?

a$.$ Project Scope is defined by the project manager, while Product Scope is defined by the customer.

b$.$ Project Scope includes risks, while Product Scope does not.

c$.$ Project Scope focuses on time and cost, while Product Scope focuses on quality and features.

d$.$ Project Scope is related to the work required to complete the project, while Product Scope is related to the characteristics and features of the project's end product.