What is the highest frequency available for point-in-time copies in this environment?

A new RecoverPoint/SE environment has been installed with a single cluster. There are no limitations regarding journal sizes and you want to choose how frequently RecoverPoint can create point-in-time copies.

What is the highest frequency available for point-in-time copies in this environment?
A . One per I/O
B . One per sec.
C . One per 500 µsec.
D . One per 500 msec.

Answer: A