A Health Insurer Has Determined That the "Reasonable and Customary $$\begin{array}{l}\mathrm{H}_{0}: \mu=\$ 1200 \\\mathrm{H}_{\mathrm{a}}: \mu>\$ 1200\end{array}$$

A health insurer has determined that the "reasonable and customary" fee for a certain medical procedure is $1200. They suspect that the average fee charged by one particular clinic for this procedure is higher than $1200. The insurer wants to perform a hypothesis test to determine whether their suspicion is correct. The hypotheses are: $$\begin{array}{l}\mathrm{H}_{0}: \mu=\$ 1200 \\\mathrm{H}_{\mathrm{a}}: \mu>\$ 1200\end{array}$$
Explain the meaning of a correct decision.

A) Concluding that $\mu>\$ 1200$ when in fact $\mu=\$ 1200$
B) Concluding that $\mu<\$ 1200$ when in fact $\mu<\$ 1200$
C) Failing to reject the hypothesis that $\mu=\$ 1200$ when in fact $\mu>\$ 1200$
D) Failing to reject the hypothesis that $\mu=\$ 1200$ when in fact $\mu=\$ 1200$ OR concluding that $\mu>$ $\$ 1200$ when in fact $\mu>\$ 1200$