In a sieve analysis test, the following data was measured:

Percentage retained on sieve $\frac{3}{4}$ in$.$ is $2\%$

Percentage retained on sieve $\frac{1}{2}$ in$.$ is $7\%$

Percentage retained on sieve $\frac{3}{8}$ in$.$ is $12\%$

The cumulative percentage retained on sieve $\frac{3}{8}$ in$.$ is:

$12\%$

$100\%$

Information given is not enough to calculate the cumulative percent retained

$21\%$