An engineer is investigating network congestion on the iSCSI network and finds pause frames are rapidly
incrementing on all host and ISL switch ports, but NOT on the array switch ports. All switch ports are configured
for both send and receive flow control.
What should the engineer conclude?

A.
Flow control is disabled on the array.

B.
High TCP/IP retransmits are causing pause frames.

C.
The ISL bandwidth is exceeded.

D.
Spanning tree convergence is pausing IO.