Using three different measuring instruments, $X$, $Y$ and $Z$, students measure the volume of a liquid. The actual volume of the liquid is $V$. Their measurements are shown. How many instruments are precise, and how many are accurate?
- Anumber of precise pieces of equipment = 1, number of accurate pieces of equipment = 1
- Bnumber of precise pieces of equipment = 1, number of accurate pieces of equipment = 2
- Cnumber of precise pieces of equipment = 2, number of accurate pieces of equipment = 1
- Dnumber of precise pieces of equipment = 2, number of accurate pieces of equipment = 2