Which of the following cultures created the Geoglyph of a Hummingbird?

All of the following statements are true of the Sumerian artifact, the Standard of Ur, EXCEPT which one?

A. The artifact is a wooden panel that was ornamented using the mosaic artistic technique B. This artifact provides visual evidence of the social order and division of labor that prevailed in Mesopotamia around 2700 BCE C. The two sides of the artifact have decorations depicting "War" on one side and "Peace" on the other side D. This artifact is a wooden panel that was ornamented using the fresco artistic technique

What are metallophones? How important are they in gamelan music?

What will be an ideal response?