This type of attack is generally most applicable to public-key cryptosystems, what type of attack am I?

A.
Chosen-Ciphertext attack

B.
Ciphertext-only attack

C.
Plaintext Only Attack

D.
Adaptive-Chosen-Plaintext attack

Explanation:
A chosen-ciphertext attack is one in which a cryptanalyst may choose a piece of ciphertext and attempt to
obtain the corresponding decrypted plaintext. This type of attack is generally most applicable to public-key
cryptosystems.
Incorrect Answers:
B: A Ciphertext-Only attack is one which the cryptanalyst obtains a sample of ciphertext without the plaintext
associated with it. This data is relatively easy to obtain in many scenarios, but a successful ciphertext-only
attack is generally difficult and requires a very large ciphertext sample. This attack is not generally most
applicable to public-key cryptosystems.
C: Plaintext Only Attack it not a defined attack type.
D: An Adaptive-Chosen-Plaintext attack is a special case of chosen-plaintext attack in which the cryptanalyst is
able to choose plaintext samples dynamically and alter his or her choices based on the results of previous
encryptions. This attack is not generally most applicable to public-key cryptosystems.