$2$a$.$ In Eukaryotes there are three principal RNA polymerases responsible for producing $99\%$ of the cells RNA. Please list the three RNA polymerases, describe which class of RNA molecules they produce, and what the role of those RNA's classes are responsible for within the cell.

$2$b$.$ Indicate which $($if any$)$ of the three RNA classes that are spliced and generally how splice is achieved for each of the RNA classes that are spliced.