## **Core Concept**
Chronic hepatitis refers to a long-standing inflammation of the liver, which can lead to liver cirrhosis, fibrosis, and even hepatocellular carcinoma. This condition is often caused by viral infections. The question tests the knowledge of hepatitis viruses and their potential to cause chronic infection.

## **Why the Correct Answer is Right**
The correct answer involves identifying which hepatitis viruses are known to cause chronic hepatitis.
- **Hepatitis B (b)** and **Hepatitis C (c)** are well-documented to cause chronic hepatitis. Hepatitis B can lead to chronic infection through vertical transmission (from mother to child) or through exposure to infected bodily fluids. Hepatitis C is primarily spread through blood-to-blood contact and has a high rate of progressing to chronic infection.
- Hepatitis B and C viruses can evade the immune system, leading to persistent infection.

## **Why Each Wrong Option is Incorrect**
- **Option A: Hepatitis A** is incorrect because Hepatitis A virus (HAV) typically causes an acute, self-limiting illness and does not progress to chronic hepatitis.
- **Option D: Hepatitis G** is incorrect because although Hepatitis G virus (HGV) can cause acute and chronic infection, it has not been definitively linked to liver disease or chronic hepatitis like Hepatitis B and C.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **Hepatitis B and C are major causes of chronic liver disease worldwide**. Screening for these viruses is crucial in patients with risk factors, and their management involves antiviral therapies aimed at reducing viral load and preventing progression to cirrhosis and hepatocellular carcinoma.

## **Correct Answer:** C. bc