Calculate Shipping Cost: $(25$ points$)$o Use multiple if$,$ elif, and else statements to calculate the shipping cost based on the following rules:$$ For Zone $1$: $$1\mathrm{.}5$ per pound.

$$ For Zone $2$: $$2\mathrm{.}0$ per pound.

$$ For Zone $3$: $$2\mathrm{.}5$ per pound.

$$ Display an error message if the package weight is negative. $$ Display an error message if the zone is not $1,2,$ or $3.$