When a cellular telephone sends a text message, the cell carrier encodes the text message and transmits the message to the receiving cellular telephone. The encoded text message is the data of the transmission. In addition to transmitting the data, the cell carrier company also stores metadata. The metadata of the text message includes the time the message was sent, the phone number of the sender, and the phone number of the receiver.

For which of the following goals would it be more useful to computationally analyze the metadata instead of the data?

I. Estimate the number of texts that will be sent next month
II. Determine the most frequently used emoji in text messages
III. Determine if two phones have been in contact in the last week