Arrange the steps involved in trading procedure at the stock exchange in correct sequence :

These are the options for the question :Arrange the steps involved in trading procedure at the stock exchange in correct sequence:

i) Settlement of order ii) Opening of Demat Account iii) Placing of order iv) Execution of order a) (ii) ; (iv);( iii);(i)                                    b) (ii) ;(i) ;(iii);(ii) c) (iii);(ii);( ii);(i)                                       d) (ii);(iii);(iv);(i)

The correct answer is -d). (ii);(iii),(iv);(i)