Which open ended discovery questions should the SE ask to determine pain points or gaps?

A large retailer company recently employed a CIO who decided that all operations should be migrated to public cloud offerings. After 7 months, the project was be a failure and determined to the CIO exited. The retailer’s infrastructure consisted of tens of thousand’s of VMs on thousands of hosts supported by dozen of storage arrays. Only 10% of workloads were migrated to public cloud during the CIO’s tenure.

Which open ended discovery questions should the SE ask to determine pain points or gaps? (Choose two)
A . What challenges triggered the public cloud initiative?
B . Which public cloud offering(s) are utilized?
C . Is de-duplication q requirement for your workloads?
D . What are your end users asking for that you cannot deliver today?

Answer: A,B