Rupert, Age 16, Is Shopping Online for a Baseball Cap

Rupert, age 16, is shopping online for a baseball cap. Using this information, identify an example of a promotional message that employs user to item collaborative filtering.

A) "Customers who live in tropical weather also bought ice cream."
B) "Customers who bought a baseball cap also bought ice cream."
C) "Customers who bought a baseball cap also bought a baseball bat."
D) "Customers who share your interest also bought a baseball bat."