SOLUTION
To solve this question, we will apply the formula
[tex]\begin{gathered} \frac{V_A}{V_B}=(\frac{r_A}{r_B})^3 \\ where\text{ V}_A=volume\text{ of pot A, V}_B=volume\text{ of pot B} \\ r_A=radius\text{ of pot A = 15 inches} \\ r_B=radius\text{ of pot B = 3 inches } \end{gathered}[/tex]Applying we have
[tex]\begin{gathered} \frac{V_A}{V_B}=(\frac{15}{3})^3 \\ =(\frac{5}{1})^3 \\ =\frac{125}{1} \\ =125:1 \end{gathered}[/tex]Hence the answer is 125 : 1, the first option