Read the following paragraph and determine if the hypothesis is true:

How to check engine vacuum hoses<br>Check each hose for bulges and swelling. If a hose feels soft or spongy when you touch it, this can indicate damage caused by your car's oil. [substeps] A swollen hose that is cracked and hard is often caused by heat damage.

Possible answers:
- Yes.
- It's impossible to say.
- No.
Hypothesis: engine vacuum hoses have great suction power



It's impossible to say