Which is an example of faulty coordination?

The guitar is featured in rock music, so most rock bands have guitarists.
The electric guitar is a fairly recent invention, yet it is a key instrument in many contemporary bands.
The first guitars had several strings, but standard modern American guitars have only six strings.
The guitar is used in a lot of contemporary music, and the instrument probably originated in Spain during the 1500s.

Question

Which is an example of faulty coordination?
 	
	The guitar is featured in rock music, so most rock bands have guitarists.
	The electric guitar is a fairly recent invention, yet it is a key instrument in many contemporary bands.
	The first guitars had several strings, but standard modern American guitars have only six strings.
	The guitar is used in a lot of contemporary music, and the instrument probably originated in Spain during the 1500s.