What is the maximum distance between z/QS host and a TS7700 Virtualization Engine for a shortwave FI

What is the maximum distance between z/QS host and a TS7700 Virtualization Engine for a
shortwave FICON adapter connected with 50 micron multimode at 4 Gbps?

A.
55 m

B.
150 m

C.
50 cm

D.
10 km