The component part of the dental $x-$ray machine that contains the $x-$ray tube is termed the:

a$.$ control panel

b$.$ tubehead

c$.$ extension arm

d$.$ console

The component part of the dental x$-$ray machine that allows movement and positioning of the tubehead is termed the:

a$.$ control panel

b$.$ extension arm

c$.$ console

d$.$ position$-$indicating device $($PID$)$

The dental radiographer can regulate the $x-$ray beam $($kilovoltage$,$ milliamperage, time$)$ through the use of the:

a$.$ control panel

b$.$ extension arm

c$.$ tubehead

d$.$ PID