Consider the following statements about the characteristics of an ideal site for bridge location across a river:

(i) There should be straight reach of the stream.

(ii) The flow of water at the bridge site should be in steady regime condition with whirls and cross currents.

(iii) There should be no confluence of large tributaries at bridges site.

(iv) Sufficiency wide stream with firm banks.

Which of the statements given above is/are correct?