Please tell me (1) what information I need to solve the question and (2) what n, z, p, q, and e each corresponds to in this question.

Thank you! :)

Question: You are a product manager for a nationally recognized pet food manufacturer. One day, you read an article discussing that there is growing interest in cat owners' use of vitamin and mineral dietary supplements to enhance their cat's health. You will conduct market research to see if this is an opportunity for the company or not. In a Research Strategy Planning Meeting, your and the Research Project Manager discuss the sample you are to survey, and the question of Sample Size comes up.You know your VP will accept no more than a 5% Margin of Error.You feel that through proper qualifying questions the pool of targeted research participants will be at the 85+% level but to "play it safe" you feel it is prudent to use an 80% level. Using for Sample Size formula that is n = [z²(pq)]/e², calculate the sample size for this research study.