Question: =+4. What can an object-oriented type system be used for? Choose only one option. (a) Improving runtime performance. (b) Preventing misuse of a class. (c)

=+4. What can an object-oriented type system be used for? Choose only one option.

(a) Improving runtime performance.

(b) Preventing misuse of a class.

(c) Avoiding spelling mistakes.

(d) Making sure that all messages invoke a concrete method.

(e) Documentation.

(f) All of the above.

(g) None of the above.

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