Which of these statements about Cisco WAAS is true?

Which of these statements about Cisco WAAS is true?

A.
Cisco WAAS Express can run simultaneously on the same Cisco Services-Ready Engine
only with Cisco Unity Express.

B.
When Cisco WAAS Express is not required, another Express service can run on the
same Cisco Services-Ready Engine.

C.
Cisco WAAS Express can run simultaneously with other Express services on the same
Cisco Services-Ready Engine.

D.
Cisco WAAS Express has the same features as Cisco WAAS and differs only in
performance.