Hello, I need help with numbers 7 and 9. Number 8 is correct so you can ignore. Thank you very much!

7. A accepts and/or transfers information serially. 4. CA. S-R latchB. shift register FPGAD. parallel register CPUs make use of change at the same time. 8, counters, in which all of the flip-flops of the counter 4.CA. synchronous B. asynchronous clocked S-R D. timed ripple is a digital circuit used within the CPU to store one or more bits of data. A. PC C. register B. ALUB. D. RAM