Hi! I'm trying to write a report to the question below, and I'm thinking that it's "uncertain" because we do not know the opportunity cost of import/export. Is it true? Also, what are some other factors or reasons that impact the decision? Explanation would be helpful! Thank you!

Australia's second biggest import is mineral fuels, including petrol. Given the importance of petroleum products in Australiawe should not be importing these products, but instead producing them ourselves.

True/False/Uncertain?