Given: An EDCA QoS BSS is operating as a Robust Security Network (RSN). Two QoS STAs in the QoS BSS are using a Direct Link to communicate.

When the RTS/CTS threshold is exceeded for a frame to be transmitted between the two QoS STAs, what is the frame exchange sequence, including interframe spaces?

A.
AIFS-RTS-SIFS-CTS-SIFS-DATA-SIFS-ACK

B.
DIFS-RTS-SIFS-ACK-SIFS-CTS-SIFS-ACK-SIFS-DATA-SIFS-ACK

C.
DIFS-RTS-CTS-SIFS-DATA-SIFS-ACK

D.
AIFS-RTS-SIFS-CTS-DIFS-DATA-SIFS-ACK

E.
RIFS-RTS-SIFS-CTS-SIFS-DATA-SIFS-ACK