Given below is the cascade of events following deforestation. Select the option which arrange them in the correct sequence. P: Erosion of top soil. Q: River channel become shallow. R: Eroded soil gets deposited on the river bed as silt. S: Destruction of crops leads to starvation. T: Shallow channels cannot hold excess water during rain and hence cause flood. U: Floods damage agricultural crops.

• A.  \[P\to Q\to R\to S\to T\to U\]
• B.  \[P\to R\to Q\to T\to U\to S\]
• C.  \[Q\to R\to P\to S\to T\to U\]
• D.  \[P\to T\to U\to Q\to R\to S\]