Which clefs are considered C clefs?

The clefs that are classified as C clefs are the alto clef and tenor clef. Both of these clefs are movable and centered around middle C, which is why they are referred to as C clefs. The alto clef is primarily used for instruments like the viola, placing middle C on the third line of the staff. The tenor clef, on the other hand, is often used for higher-pitched instruments such as the trombone or cello in certain contexts, placing middle C on the fourth line.

In contrast, the treble and bass clefs are not considered C clefs; the treble clef is a G clef, indicating that the G note is located on the second line of the staff, while the bass clef is an F clef, placing F on the fourth line. Other options mentioned, such as the baritone and soprano clefs, do not fit the classification of C clefs as they do not perform the same function or relate to the centering around middle C. Similarly, French and German clefs refer to specific regional uses of music notation but do not directly pertain to the characteristics of C clefs.