3. It is important to use either upper or lowercase letters to identify a vendor because the program: a. Can only recognize alphabetic characters. b. Doesn't recognize numbers. c. Doesn't recognize symbols. d. Is case sensitive. e. None of the above. 4. Use cards menu to complete which of the following: a. Create vendor records. b. Enter purchases transactions. c. Print vendor reports. d. Do inquiries e. None of the above