If Henle's loop were absent from mammalian nephron, which

If Henle's loop were absent from mammalian nephron, which of the following is to be expected?

1. The urine will be more dilute
2. There will be no urine formation
3. There will be hardly any change in the quality and quantity of urine formed
4. The urine will be more concentrated

Henle’s loop is associated with the concentration of urine and production of hypertonic urine.