שאלה | Why is the Simple AES algorithm vulnerable to a known plaintext attack, where the attacker knows both the plaintext and the ciphertext?

Why is the Simple AES algorithm vulnerable to a known plaintext attack, where the attacker knows both the plaintext and the ciphertext?

		Because the attacker can brute-force the key using the known plaintext
		Because the key length in Simple AES is too short
		Because the attacker can compute the intermediate value ? = MixColumns ( ShiftRows ( SubBytes ( ? ) ) ) S=MixColumns(ShiftRows(SubBytes(M))), and then derive the key using S and the known ciphertext ?
		Because AES is inherently weak and easily broken