please help

Question 14 2.5 pts When activity volume decreases in the short term, which of the following is true? (hint: some costs are constant in total, and some costs are constant per unit) OFC per unit remain unchanged and VC per unit decrease OFC per unit increase and VC per unit decrease OFC per unit decrease and VC per unit decrease OFC per unit decrease and VC per unit remain unchanged OFC per unit increase and VC per unit remain unchanged U Question 15 2.5 pts