9. The invariable units comprising / or8 bits of information 10. a clock generated locally by the receiver 1l. The received parity bit following the character 12. The falling edge of the start bit 13. The character-oriented nature of the data link 3. Fill in the blank with the best choice 1. An asynchronous serial data link is said character oriented as information is transmitted in the form of groups of bits characters lling B. to being, to call C. be C D to be called9．The invariable units comprising 7 or 8 bits of information 10．A clock generated locally by the receiver 11．The received parity bit following the character 12. The falling edge of the start bit 13. The character-oriented nature of the data link 1．An asynchronous serial data link is said ______________ character oriented, as information is transmitted in the form of groups of bits _______________ characters. A. be, calling B. to being, to call C. been, call D. to be, called