How many wires are there in a Serial ATA (SATA) cable?

A.
4

B.
7

C.
40

D.
80

Explanation:
A Serial ATA (SATA) cable has seven wires: two for data transmission; another two for data reception; and three independent ground return wires.
Incorrect Answers:
A: Serial ATA (SATA) has 7-wire cable, not a 4-wire cable.
C: Parallel ATA has a 40-wire cable; Serial ATA (SATA) has a 7-wire cable.
D: Ultra-ATA 66 and Ultra-ATA 100 has an 80-pin cable; Serial ATA (SATA) has a 7-wire cable.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 168-177.