which part of the Activities page do you define the action of creating a new purchase order?

You are designing an Activities page for a company’s purchasing department. You need to
ensure that users are able to create a new purchase order from this Activities page. On
which part of the Activities page do you define the action of creating a new purchase order?

A.
Type = Field and no Sub Type

B.
Type = Container and SubType = ContentArea

C.
Type = Group and SubType = CueGroup

D.
Type = Container and SubType = RoleCenterArea