The UPS2000-G series (6 kVA to 20 kVA) features an industry-leading lightning protection design, with a lightning protection level of () and a surge protection level of (), which avoids 90% of failures caused by lightning strikes and offers reliable protection for the AC input ports on back-end devices.

The UPS2000-G series (6 kVA to 20 kVA) features an industry-leading lightning protection design, with a lightning protection level of () and a surge protection level of (), which avoids 90% of failures caused by lightning strikes and offers reliable protection for the AC input ports on back-end devices.
A . 5 kA; 6 kV
B . 2 kA; 4 kV
C . 2 kA; 6 kV
D . 4 kA; 6 kV

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Answer: A