Which of the Following Is True Concerning the Properties of Zinc

Which of the following is true concerning the properties of zinc polycarboxylate cements?

A) The polyacrylic acid in zinc polycarboxylate cement produces significant pulpal irritation and the pulp must be protected.
B) The viscosity of zinc polycarboxylate cements is lower than that of most other cements.
C) These cements have higher compressive strength and lower solubility when compared with other cements.
D) The retention of polycarboxylate cements is both chemical and mechanical, making this cement desirable for retention of indirect restorations.