Samantha & Ryan are investigating an unknown substance. They make the following observations about the substance:
1. it is black
2. it has a dull luster
3. it weighs 6.50 g
4. it is solid
5. it is roughly 2 inches long
6. it does not conduct electricity
7. it takes up a volume of 2.00 mL
8. it has a density of 3.25 g/mL

Some of these properties will change if more sample were added to their observations. Some will stay the same. Which properties will change? Choose the numbers
A) 1,2,3,8
B) 3,5,7,8
C) 3,5,7
D) 3,6,8