Considering the Poisson distribution, what is the effect of reducing defect density from $0\mathrm{.}3$ cm$-2$ to $0\mathrm{.}1$ cm$-2$ for a $0\mathrm{.}9$ cm$2$ chip?

Group of answer choices

The yield goes up by about $15\%.$

The yield goes up by about $20\%.$

The yield goes down by about $30\%.$

There is no change in the yield.