Which import mode achieves this result?

An engineer is creating a configuration import policy that must terminate if the imported configuration is incompatible with the existing system.

Which import mode achieves this result?
A . merge
B . atomic
C . best effort
D . replace

Answer: B

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/aci-fundamentals/Cisco-ACI-Fundamentals-401/Cisco-ACI-Fundamentals-401_chapter_01011.html