Glass ionomer cements are composed of: (A) Aluminosilicate powder and phosphoric acid, (B) Aluminosilicate powder and polyacrylate, (C) Zinc oxide powder and phosphoric acid, (D) Zinc oxide powder and polyacrylate liquid
Answer is B. Glass-ionomer cement is often known as a biomimetic material, because of its similar mechanical properties to dentine.
Synonyms

Poly (alkenoate) cement
GIC (glass ionomer cement)
ASPA (alumino silicate polyacrylic acid)

Ref: Mannapalli ed 3 pg 67