4
\(A\) B \(A \quad B\)
\(\begin{array} { l l } B &
A & B \end{array}\)
\(P B\) $$P \theta$$ \(\theta\)
P
\(\theta\)
L
\(P\)
\(P\)

1. (i)
   P \(\theta\)
   \(P \quad \underline { \theta }\)
2. -
   \(\underline { \theta }\)
   \(5 \theta\) $$\begin{gathered}
   \theta \end{gathered} \quad P$$
3. \(P\)