For $\mathrm{x} \in \mathbb{R}$, let the function $\mathrm{y}(\mathrm{x})$ be the solution of the differential equation
$$
\frac{\mathrm{dy}}{\mathrm{dx}}+12 \mathrm{y}=\cos \left(\frac{\pi}{12} \mathrm{x}\right), y(0)=0 .
$$
Then, which of the following statements is/are TRUE?
Select the correct option:
A
$y(x)$ is an increasing function
B
$\mathrm{y}(\mathrm{x})$ is a decreasing function
C
There exists a real number $\beta$ such that the line $\mathrm{y}=\beta$ intersects the curve $\mathrm{y}=\mathrm{y}(\mathrm{x})$ at infinitely many points
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