Express the Null Hypothesis and the Alternative Hypothesis in Symbolic $\mu ,$

Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (µ, p, ?) for the indicated parameter.
-The manufacturer of a refrigerator system for beer kegs produces refrigerators that are supposed to maintain a true mean temperature, $\mu ,$ , of 48°F, ideal for a certain type of German pilsner. The owner of the brewery does not agree with the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect.

A)
$\begin{array}{l}\mathrm{H}_{0}: \mu \geq 48^{\circ} \\\mathrm{H}_{1}: \mu<48^{\circ}\end{array}$

B)
$\begin{array}{l}\mathrm{H}_{0}: \mu \neq 48^{\circ} \\\mathrm{H}_{1}: \mu=48^{\circ}\end{array}$

C)
$\begin{array}{l}\mathrm{H}_{0}: \mu=48^{\circ} \\\mathrm{H}_{1}: \mu \neq 48^{\circ}\end{array}$

D)
$\begin{array}{l}\mathrm{H}_{0}: \mu \leq 48^{\circ} \\\mathrm{H}_{1}: \mu>48^{\circ}\end{array}$