You are the manager of a popular shoe company. You know that the Advertising Elasticity of demand for your product is $0\mathrm{.}15.$ How much will you have to increase advertising in order to increase demand by $10\%?$

a$.0\mathrm{.}02\%.$

b$.38\mathrm{.}6\%.$

c$.66\mathrm{.}7\%.$

d$.4\mathrm{.}3\%.$

e$.$ none of the above