Consider the following statements.
1. A Computed Tomography (CT) scan uses X-rays to make detailed pictures.
2. A CT scan can be used to study all parts of Human body.
3. CT scan can help determine how much the cancer has spread in body. This is called staging the cancer.
Which of the statements given above is/are correct?

A. 1 and 2

B. 2 and 3

C. 1 and 3

D. 1, 2 and 3

Answer: Option D