How does the COMMUNITY attribute of the route set by the routing strategy affect the route selection?

How does the COMMUNITY attribute of the route set by the routing strategy affect the route selection?
A . It can be indirectly affected. By setting the COMMUNITY attribute of the route, the route can be classified, and then different routing-related attributes, such as LOCAL-PRE, MED, etc., can be set according to the category, so as to achieve the purpose of influencing routing
B . It cannot be affected because the COMMUNITY attribute of the route is a non-transitional attribute and cannot be passed between routers
C . It can be affected indirectly. By setting the COMMUNITY attribute of the route, the route can be classified, and then different routing-related attributes can be set according to the category. These attributes can only include LOCAL-PRE, MED, to achieve the purpose of influencing routing selection.
D . After the router receives the route update with the COMMUNITY attribute of NO_ADVERTISE, it will not be published outside the local A

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Answer: A