Assertion (A): Veins starting from the intestines do not open directly into the inferior vena cava.

Reason (R): They unite and enter the liver as hepatic portal vein.

1. (A) is true and (R) is false.
2. (A) is false and (R) is true.
3. Both (A) and (R) are true.
4. Both (A) and (R) are false.

Both (A) and (R) are true.

Reason — Veins from the intestines do not open directly into the inferior vena cava. Instead, they join to form the hepatic portal vein, which first carries nutrient-rich blood to the liver for processing before it enters the general circulation.