Differentiate the given function.

$f(u)=0\mathrm{.}05u^5-2\mathrm{.}12u^{3}5u2\mathrm{.}3$

$0\mathrm{.}2u^4-4\mathrm{.}24u^{2}5$

$0\mathrm{.}25u^4-6\mathrm{.}36u^{2}5$

$0\mathrm{.}25u^4-6\mathrm{.}36u^{2}5u$

$0\mathrm{.}2u^4-4\mathrm{.}24u^{2}5u$