Which of the following is the most precise procedure for measuring the volume of a small rock sample about the size of a nickel?
A. Reading the volume at the meniscus in a 250 mL beaker
B. Reading the volume at the edges in a 100 mL graduated cylinder
C. Reading the volume at the meniscus in a 50 mL graduated cylinder
D. Reading the volume at the edges in a 50 mL beaker