This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Which of the following is true about direct filling gold? 
Select and explain. 
A. Properly condensed mat gold has no voids, B. Whatever may be the type, voids are inherent, C. Voids can be avoided with manual condensation, D. None of the above
B: Whatever may be the type, voids are inherent
Answer: B: Whatever may be the type, voids are inherent 
Explanation: Porosity is likely to occur in all direct gold restorations. Each type of gold requires a slight variation in technique to avoid either closed pores or open pores that intersect the surface.
Ref: Phillips 12 ed page no 414,415