When would a data subject NOT be able to exercise the right to portability?

When would a data subject NOT be able to exercise the right to portability?
A . When the processing is necessary to perform a task in the exercise of authority vested in the controller.
B . When the processing is carried out pursuant to a contract with the data subject.
C . When the data was supplied to the controller by the data subject.
D . When the processing is based on consent.

Answer: A

Explanation:

Reference: https://ico.org.uk/for-organisations/guide-to-data-protection/guide-to-the-general-data-protection-regulation-gdpr/individual-rights/right-to-data-portability/