Which step is typically performed first when computing expected sojourn times for a Markov chain with transient states?

Which step is typically performed first when computing expected sojourn times for a Markov chain with transient states?

• A. Identify transient states and create the PT matrix.
• B. Compute S = (I - PT)^{-1}.
• C. Calculate the I - PT matrix.
• D. Find S_ij from S.

Answer: (A)