Which two are good options for selling Cisco WAAS during a router refresh at branches?

In the frame of IT consolidation, vWAAS would be a good solution when deployed on Cisco ISR G2 at the branches.

Application acceleration can be achieved by using WAAS Mobile on end devices and WAAS Server on Cisco ISR G2 at the branches.

In order to optimize bandwidth, WAAS Express (running in Cisco ISR G2 IOS Software) is a cost-effective solution for branches.

In order to optimize application performance, Cisco WAAS on Cisco SRE (in Cisco ISR G2) is a good solution for branches.