Consider the following statements regarding antibiotics :
1. They are used to destroy disease-causing bacteria.
2. They can be applied to the skin, swallowed or injected to fight microorganisms inside the body.
3. They are effective Against disease-causing viruses.
4. The first antibiotic to be discovered was tetracycline.
Which of the statements given above is/are correct?

Options

A. 1 and 2 only
B. 1, 2 and 4
C. 2, 3 and 4
D. 1 only