A.The body attached to the lower end of wire or rod must be elastic
B.The clamp must be elastic
C.The clamp must be elastic
D.(A) and (B) above
E.(A), (B) and (C) together
A.The body attached to the lower end of wire or rod must be elastic
B.The clamp must be elastic
C.The clamp must be elastic
D.(A) and (B) above
E.(A), (B) and (C) together