Read the text and determine if the sentence is true (see options at the end):

How to make papier mache eggs<br>Blow up a balloon, tie the end into a knot, and set it down in a small cup. The cup will prevent the balloon from rolling away while you work. Mix 2 parts white school glue with one part water in a small bowl.

Sentence: It is best to blow up the balloon with helium.
Select from the following. +Yes; +It's impossible to say; +No;
It's impossible to say