Which statement best describes scaling a fault tolerant spine-leaf multipathing fabric architected for an NSX deployment?

Which statement best describes scaling a fault tolerant spine-leaf multipathing fabric architected
for an NSX deployment?

A.
Scaling should be performed by replacing 1Gbps links in the architecture with 10Gbps links.

B.
Scaling should be performed by increasing the number of links from each leaf switch to the
associated spine switches in the architecture.

C.
Scaling should be performed by increasing the number of spine switches while maintaining
point-to-point connectivity between leafs and spines.

D.
Scaling should be performed by using layer 2 switching between the leaf and spine switches.