Consider the following statements regarding MS Office:
1. MS Excel uses the file extension ".xls" or ".xlsx."
2. MS PowerPoint presentations are saved with the extension ".ppt" or ".pptx."
3. MS Word documents can only be saved as ".docx."
4. MS Access is a database management tool included in MS Office.
Which of the following statements are correct?
1
2, 3, and 4
2
1, 3, and 4
3
2 and 3
4
1, 2, and 4