Hi, I can't make heads or tails of this question, no matter the research I find. I believe it's 3. Please advise with explanation. Thank you.

Which of the following are equivalent under M&M proposition I?

• 1 Maximizing firm value and maximizing firm profit
• 2 Maximizing firm value and minimizing the cost of capital
• 3 Minimizing firm's cost of capital and minimizing firm's debt burden
• 4 Maximizing profit and minimizing taxes