How do I solve this? Also Please give an explanation for both C and D.

5. (10 points) Using the 526 observations on workers in Alaska, we include exper (years of labor market experience) in an equation explaining log(wage): log( wage) = 0.43 +0.0125exper 1 =526, R- =0.182 (a) Interpret the effect of experience on wage clearly (3 points). (b) Explain the meaning of R3=0.182 clearly (3 points). (c) Decide whether the following statement is true (T) or false (F): "The errors are computed from the data, whereas the residuals are never observable." (2 points) (d) Decide whether the following statement is true (T) or false (F): "If Assumption 4 (sample variation in the independent variable) fails, then we will not be able to obtain the OLS estimates." (2 points)