A Security Analyst Is Emailing PII in a Spreadsheet File

A security analyst is emailing PII in a spreadsheet file to an audit validator for after-actions related to a security assessment. The analyst must make sure the PII data is protected with the following minimum requirements: Ensure confidentiality at rest. Ensure the integrity of the original email message. Which of the following controls would ensure these data security requirements are carried out?

A) Encrypt and sign the email using S/MIME.
B) Encrypt the email and send it using TLS.
C) Hash the email using SHA-1.
D) Sign the email using MD5.