Answer:
B. NON RIVAL but EXCLUDABLE good
Step-by-step explanation:
A good is Excludable if it can be feasibly prevented to be used by people , by efficiently excluding non paying consumers from using it . Ex: Excludable - Private Property , Non Excludable - Air Pollution
A good is Rival , if it's consumption by a consumer doesn't reduce it's availability for consumption by other consumers . Ex : Rival - Food Item , Non Rival - Voice of a Radio
A view of spectacular sunset along a private beach is : Excludable ; because of it being 'Private' - so can prevented to be accessed by non paying consumers Non Rival ; because consumption of that view by a consumer doesn't reduce its potentiality to be viewed by other people [unless its exceptionally crowded]