The correct answer is B. F-A-C-D-Eb-D-C-A. Boogie-woogie bass lines are typically played in a 8-beat rhythm with a walking bass line. This means that the bass line should move up and down between the root note and the fifth note of the major scale. The example B. F-A-C-D-Eb-D-C-A does not follow this pattern and so is not an example of a boogie-woogie bass line.