The figure shown below is the root locus of open-loop transfer function of a control system where
\(\times\) represents pole
- represents zero
\(\mathrm{O}\) - Origin
\(\mathrm{PQ}=2.6=\mathrm{PQ}^{\prime}\)
\(\mathrm{PR}=1.4\)
\(\mathrm{OR}=2.0\)
\(\mathrm{OQ}=1.4=\mathrm{OQ}^{\prime}\)

The value of the forward path gain \(\mathrm{K}\) at the point \(\mathrm{P}\) is
(a) 0.2
(b) 1.4
(c) 3.4
(d) 4.8

P KQ R XQ' jo 0 O