Q40. The correct IUPAC name of $\left[ \mathrm { PtBr } _ { 2 } \left( \mathrm { PMe } _ { 3 } \right) _ { 2 } \right]$ is :\\
(1) dibromodi(trimethylphosphine)platinum(II)\\
(2) bis(trimethylphosphine)dibromoplatinum(II)\\
(3) dibromobis(trimethylphosphine)platinum(II)\\[0pt]
(4) bis[bromo(trimethylphosphine)]platinum(II)