Answer:
[tex] \underline{\boxed{B : C:D:E}}[/tex]
Explanation:
[tex] \underline{ \boxed{ B}} : \to \\ (the \: surface \: exacts \: a \: force\: normal \: (at \: 90 \degree) \: on \:\to A) \\ \underline{ \boxed{C }}: \to \\ (dynamic \: friction \: force \: acts \to \: on \: A \: as \: it \: slides) \\ \underline{ \boxed{D }} : \to \\ (an \: anti - upward \: force \: acts \: on \to \:A \: preventing \: it \: from \: floating ) \\ \underline{ \boxed{ E }} : \to \\ (the \: weight \: of \: B \: \: is \: applied \: to \to \: A)\\ [/tex]