How does a brute$-$force attack work in the context of the substitution cipher? $($Select all that apply$)$

Group of answer choices

If the resulting plaintext matches the short piece of plaintext, Oscar has found the correct key.

Oscar has the substitution table.

Oscar decrypts the ciphertext with all possible keys.

Oscar has a short piece of plaintext.

Oscar has the ciphertext from eavesdropping on the channel.