Translate the Following Symbolized Categorical Statement into English Using the Provided

Translate the following symbolized categorical statement into English using the provided key. $\mathrm{L} x=x$ is limestone $\quad$$\quad$$\quad$$\quad$$\quad$$\mathrm{M} x=x$ is metamorphic
$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$(x) (\mathrm{L} x \Rightarrow?\mathrm{M} x)$

A) All limestone is metamorphic.
B) No limestone is metamorphic.
C) Some limestone is metamorphic.
D) Some limestone is not metamorphic.
E) None of these answers are correct.