Option 1: Both the statements are individually true and statement II is the correct explanation of statement I.

This option suggests that both statements I and II are true, and statement II provides the correct explanation for statement I. In this case, statement I states that most east flowing rivers over the Deccan plateau have deltas at their mouth, while statement II states that these rivers have courses through soft rocks of the Deccan plateau. According to this option, the reason why the rivers have deltas is because they flow through soft rocks.

Option 2: Both the statements are individually true, but statement II is not the correct explanation of statement I.

This option agrees that both statements I and II are true, but it suggests that statement II does not provide the correct explanation for statement I. In other words, there might be another reason why the east flowing rivers have deltas, besides flowing through soft rocks.

Option 3: Statement I is true, but statement II is false.

This is the correct answer provided in the question. It suggests that statement I is true, meaning that most east flowing rivers over the Deccan plateau do have deltas at their mouth. However, statement II is deemed false, indicating that the reason for these deltas is not because the rivers have courses through