Which two models of Cisco WAAS can be integrated into the Cisco 4000 Series ISR routers?

Which two models of Cisco WAAS can be integrated into the Cisco 4000 Series ISR routers? (Choose
two.)

A.
ISR-WAAS

B.
vWAAS on Cisco UCS E-Series

C.
WAAS Express Cisco UCS E-Series

D.
vWAAS on Cisco UCS B-Series

E.
WAE-7341