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

How to prevent baking a lumpy cake<br>Place oven rack so cake pan will be baking near the center of your oven so the hot air can circulate fully. Make sure rack is level. Preheat oven.

Sentence: The cake pan must be level
Options:
[a]. Yes;
[b]. It's impossible to say;
[c]. No;
[b].