would each Coefficient be predicted to be either positive, negative, or ambiguous?

(8 points) You have gained access to a dataset that includes commercial real estate transaction that took place during the 2017-2019 time period in Miami, FL and in San Francisco, CA. After general data clean up you ran the following regression: Price = a + PSQFT + BYear + 3 Class + B4DumMiami Where: Price is the price in dollars paid for each property transacted. SQFT is the size of each property transacted in squared feet. Year takes a value of 0, 1 or 2 if the transaction took place during the year 2017, 2018 or 2019, respectively. Class takes a value of 0, 1 or 2 if the transacted property is of class A, B or C, respectively. DumMiami is a dummy variable that takes a value of 1 if the property transacted is locate in Miami and 0 otherwise. For each of the coefficients ((B, B, B3 and 4) please predict whether you expect it to be positive, negative or ambiguous and explain in one sentence.