Study the following information carefully and answer the given questions :
A word and number arrangement machine when given an input line of words and numbers rearranges them following a particular rule in each step. The following is an illustration of input and steps of rearrangement :
Input : say dry 42 96 get 39 lite 67
Step I : 96 say dry 42 get 39 kite 67
Step II : 96 dry say 42 get 39 kite 67
Step III : 96 dry 39 say 42 get kite 67
Step IV : 96 dry 39 say 67 42 get kite
Step V : 96 dry 39 say 67 get 42 kite
Arrangement in Step V is the final arrangement and Step V is the last step.
You have to answer the questions by following the same rules as illustrated above.
Which step will be the last step of an input for which third step is "91 go 28 mock pet 43 lead 37" ?
1) Eight
2) Seventh
3) Sixth
4) Fifth
5) None of these

Explanation

2, Seventh