Which of the following statements are true?

A. Simplex data transmission is in two‐directions only

B. Half‐duplex data transmission is in both directions but not at the same time

C. Full‐duplex data transmission is in both directions simultaneously

D. Serial data transmission is when data is sent, 8 bit at a time, over a single wire

E. Parallel data transmission is when one bit of data is sent down over a single wire

Choose the correct answer from the options given below: