Quantity $X$ has a percentage uncertainty of $2\%$. Quantity $Y$ has a percentage uncertainty of $4\%$. A quantity $W$ is found using the values of $X$ and $Y$. The percentage uncertainty in $W$ is $8\%$. What relationship could link $W$, $X$ and $Y$?
- A$W = XY$
- B$W = 2XY$
- C$W = \frac{X}{Y^2}$
- D$W = \frac{Y}{X^2}$