Which command fixes the problem in the SFD9300- 1 switch?

Refer to the exhibit.


An engineer identifier a Layer 2 loop using DNAC. Which command fixes the problem in the SFD9300- 1 switch?
A. no spanning-tree uplinkfast
B. spanning-tree loopguard default
C. spanning-tree backbonesfast
D. spanning-tree portfast bpduguard