Which of the following pairs are correctly matched?<br>1. Test Checking ⇔ Random checking<br>2. Internal Check ⇔ A system of automatic checking<br>3. Internal Control ⇔ Includes internal check and internal audit<br>4. Investigation ⇔ General examination of all accounting records<br>Select the correct answer:

Correct Answer: 1, 2 and 3