Step 1:
Vaisheshika philosophy accepts nine dravyas (substances).
Step 2:
Prithivi, Jala, Teja, and Akasha are accepted as dravyas.
Step 3:
Samavaya is not a substance; it is a category representing inherence relation.
\[
\boxed{\text{Samavaya is not Dravya}}
\]
Step 4:
Hence, the correct answer is:
\[
\boxed{\text{(4) C Only}}
\]