I usually soak it in hot/warm water for about 30 minutes and then just use a washcloth or something to try and get it out a little at a time and if that doesn't work I soak it in hot soapy water and try it that way. I think the soapy water would do better for you. It usually works for me.
I hope this helps in some way.
Answer:
A
Explanation:
A. analogy
ANALOGY/DEFINITION: a comparison between two things, typically on the basis of their structure and for the purpose of explanation or clarification.
Not great with math sorry