Which of the following is the MOST economical way for Sandy, a technician, to implement 10-Gigabit Ethernet at a datacenter?

Which of the following is the MOST economical way for Sandy, a technician, to implement 10-Gigabit Ethernet at a datacenter?

A.
10GBaseLR

B.
10GBaseSR

C.
10GBaseX

D.
10GBaseT