Which of these statements about Cisco WAAS is true?

Which of these statements about Cisco WAAS is true?

A.
Cisco WAAS Express is integrated into Cisco IOS.

B.
Cisco WAAS Express can run simultaneously with Cisco Unity Express on the same
Cisco SRE.

C.
Cisco vWAAS can be implemented on any Cisco ISR routers.

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