Step 1: Evaluate Statement I.
Stereocilia occur in:
\[
\text{Epididymis}
\]
and
\[
\text{Inner ear}
\]
Hence Statement I is true.
Step 2: Evaluate Statement II.
Basement membrane consists of:
\[
\text{Basal lamina + Reticular lamina}
\]
Therefore Statement II is also true.
Hence,
\[
\boxed{\text{Both statements are true}}
\]
Option (A) is correct.