User blog comment:Anomalous13/Bloons Trivia Game/@comment-1785597-20120627040416

June 26, 2012 - 7:59 PM

In order for an Ice Tower to freeze a Zebra Bloon in BTD4, you must:

A) Simply freeze the Zebra Bloon

B) Purchase the Level 3 upgrade for the Ice Fortress

C) Use multiple Ice Towers

D) Snap Freeze a Rainbow Bloon