Consider the following reaction and statements : <br> $[Co(NH_3)_4Br_2]^+ + Br^- \to [Co(NH_3)_3Br_3] + NH_3$ <br> (i) Two isomers are produced if the reactant complex ion is a cis-isomer. <br> (ii) Two isomers are produced if the reactant complex ions is a trans-isomer. <br> (iii) Only one isomer is produced if the reactant complex ion is a trans-isomer. <br> (iv) Only one isomer is produced if the reactant complex ion is a cis-isomer. <br> The correct statements are :

Question

( A ) (iii) and (iv)
( B ) (i) and (iii)
( C ) (ii) and (iv)
( D ) (i) and (ii)