A customer wants to add a fully populated BladeCenter chassis to their existing core-edge
SAN. They have suffered performance issues in the past due to congestion and overutilization of inter-switch links (ISL). The customer has asked what is the best practice
guideline concerning ISL oversubscription ratio.
Which one of the following ratios does the technical specialist provide?

A.
1:1

B.
10:1

C.
20:1

D.
50:1