The smelliness of cheese (denoted by $S$) can be defined as a function of the amount of bacteria in the cheese (denoted by $B$) and the surface area of the cheese (denoted by $A$) using this formula: $S = { B\cdot A}$ Surface area of the cheese is measured in $\text{cm}^2$. **Select an appropriate measurement unit for smelliness of cheese.** [[☃ radio 1]]