Which of the following complex(s) cannot exhibit both geometrical and optical isomerism?

⇒sp3hybridisation; does not show both geometrical and optical isomerism.(2) ⇒dsp2 hybridisation; shows geometrical isomerism but does not show optical isomerism.(3) ⇒d2sp3 hybridisation; shows both geometrical and optical isomerism.(4) ⇒d2sp3 hybridisation; does not show geometrical isomerism but shows optical isomerism.