A company is planning to host a set of resources in Azure. They want to protect their resources against DDoS attacks and also get real-time attack metrics. Which of the following should the company opt for?

Answer options:

A.DDoS Protection Basic
B.DDoS Protection Standard
C.DDoS Protection Premium
D.DDoS Protection Isolated

Answer - B 
The Microsoft documentation mentions the following. 

Since this is clearly mentioned in the documentation, all other options are incorrect. 
For more information on DDoS protection, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/virtual-network/ddos-protection-overview