GMDSS: Element 3

1. A A 10 bit error correcting code starting with bits of data followed by a 3 bit error correcting code.
2. B A 10 bit error correcting code starting with a 3 bit error correcting code followed by 7 bits of data.
3. C An 8 bit code with 7 bits of data followed by a single parity bit.
4. D A 7 bit code that is transmitted twice for error correction.

Tip: press A-D to answer