The client can use a method without knowing how it is implemented. The details of the implementation are encapsulated in the method and hidden from the client who invokes the method. This is known as

$($Multiple answers: Choose all that apply$)$

$$ a$.$ encapsulation

$$ b$.$ information hiding

$$ c$.$ method overloading

$$ d$.$ polymorphism

$$ e$.$ all of them

$$ f$.$ none of them