Concept:
Studio pottery emphasizes handmade ceramic practice, artistic individuality, and experimental firing techniques.
•
Step 1:
P. R. Daroz is a major Indian studio potter and ceramic artist.
Thus:
\[
A \text{ is correct}
\]
•
Step 2:
Ira Choudhuri is associated with ceramic and pottery practice.
Thus:
\[
B \text{ is correct}
\]
•
Step 3:
Sardar Gurcharan Singh is considered one of the pioneers of Indian studio pottery.
Thus:
\[
C \text{ is correct}
\]
•
Step 4:
Sankho Chaudhuri and Satish Gujral are mainly associated with sculpture and painting rather than studio pottery.
\[
\boxed{\text{(3) A, B and C Only}}
\]