Using the NRZ Bipolar format, the Binary data $011$ is encoded as

A$.,a_n{d}_n{d}_n-d_{n}d$

B$.,a_n-a_{n}d,-a_{n}d$

C$.,a_n,a_{n}d,a_{n}d$

D$.,-a_p,a_n{d}_n,-a_{n}d$