Regarding Screen Aggregates, which of the following options is false?

Regarding Screen Aggregates, which of the following options is false?
A . Screen Aggregates can only be executed when explicitly called.
B. Screen Aggregates can only fetch data from the database.
C. Screen Aggregates only exist within the scope of the Screen where they were defined.
D. Screen Aggregates run asynchronously and in parallel.

Answer: A