According to the GDPR, how is pseudonymous personal data defined?

According to the GDPR, how is pseudonymous personal data defined?
A . Data that can no longer be attributed to a specific data subject without the use of additional information kept separately.
B . Data that can no longer be attributed to a specific data subject, with no possibility of re-identifying the data.
C . Data that has been rendered anonymous in such a manner that the data subject is no longer identifiable.
D . Data that has been encrypted or is subject to other technical safeguards.

Answer: A

Explanation:

Reference: https://www.chino.io/blog/what-is-pseudonymous-data-according-to-the-gdpr/