Question: How do 3GPP readers, incapable of handling encrypted media, treat tracks containing such media in a 3GP file?
Option 1: They attempt to decrypt the media using default keys.
Option 2: They ignore the dedicated sample entries for encrypted media.
Option 3: They alert the user about the presence of encrypted content.
Option 4: They automatically download necessary decryption plugins.
Explanation: This is because tracks with encrypted media in a 3GP file use dedicated sample entries designed to be ignored by 3GPP readers not capable of handling encrypted media, ensuring compatibility and preventing errors for readers without decryption capabilities.