In English, one would lower the pitch at the end of a sentence for questions, including open-ended WH-Questions (wh-q). In ASL, how do signers indicate they're asking an open-ended WH-Question?

A. Furrow eyebrows. Tilt head slightly towards the front.
B. Raise eyebrows. Tilt head slightly towards the front.
C. Raise eyebrows. Tilt head slightly towards the back.
D. Furrow eyebrows. Tilt head slightly towards the back.