Which of the following complex compounds will exhibit highest...

(A) Electronic configuration of \mathrm{Ti}^{3+} in \left[\mathrm{Ti}\left(\mathrm{NH}_3\right)_6\right]^{3+}
(B) Electronic configuration of \mathrm{Cr}^{3+} in \left[\mathrm{Cr}\left(\mathrm{NH}_3\right)_6\right]^{3+}$<img src="/api/proxy-image?url=https(C) Electronic configuration of \mathrm{Co}^{3+} in$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+} :
In the presence of strong field ligand \mathrm{NH}_3$, pairing of electrons takes place and thus, octahedral complex,$\quad\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+} is diamagnetic. \left[\mathrm{Co}\left(\mathrm{NH}}_{3}\right)_6\right]^{3+} \left[$\begin{array}{l} \text{ inner orbital or }\\ \text{ low spin complex } \end{array}$\right]\left(6 \mathrm{NH}}_{3} \text{ molecules }\right)<img src="/api/proxy-image?url=https%3A%2F%2Ffirebasestorage.googleapis.com%2Fv0%2Fb%2Fquantrexacademy-app.firebasestorage.app%2Fo%2Fquestions%252Ffigs%252Fpyq%252Fneet%252F5FluQ1pEDh1Nq_kiQOQl__QLG0pvmtQH6VDqi8ZzSi4.original.fullsize.png%3Falt%3Dmedia&clean=1&v=wm2" data-qx-orig-src="https://firebasestorage.googleapis.com/v0/b/quantrexacademy-app.firebasestorage.app/o/questions%2Ffigs%2Fpyq%2Fneet%2F5FluQ1pEDh1Nq_kiQOQl__QLG0pvmtQH6VDqi8ZzSi4.original.fullsize.png?alt=media" data-qx-storage-src="https://firebasestorage.googleapis.com/v0/b/quantrexacademy-app.firebasestorage.app/o/questions%2Ffigs%2Fpyq%2Fneet%2F5FluQ1pEDh1Nq_kiQOQl__QLG0pvmtQH6VDqi8ZzSi4.original.fullsize.png?alt=media"> \\ (D) Electronic configuration of \mathrm{Zn}^{2+} in\left[\mathrm{Zn}\left(\mathrm{NH}}_{3}\right)_6\right]^{2+} : \\ \therefore\left[\mathrm{Zn}\left(\mathrm{NH}}_{3}\right)_6\right]^{2+} is an outer orbital complex and is diamagnetic.