What is the difference between an acknowledgment and a jurat?

What is the difference between an acknowledgment and a jurat?

• A. An acknowledgment certifies that the signer appeared and acknowledged the signature; a jurat certifies that the signer swore to the truth of the contents and signed in the notary's presence
• B. An acknowledgment requires the signer to swear to the truth; a jurat does not
• C. The two acts are identical in purpose
• D. A jurat certifies the signer appeared and acknowledged the signature

Answer: (A)