Use the estimated regression equation and standard error below to answer the following questions. Be sure to pay attention to the variable description and units below the equation. Which of the following would be a correct interpretation of the estimated slope coefficient of 2.39E-05 for the model above? Note, please be sure you are paying attention to the entire model and read each choice carefully. This might require a little bit of critical thinking in terms of the units. Question 18 options: As starting salary increases by $1000, mid-career salary increases by 0.0239%, on average and all else constant. As starting salary increases by $1000, mid-career salary increases by 2.51%, on average and all else constant. As starting salary increases by $1000, mid-career salary increases by 2.39%, on average and all else constant. As starting salary increases by $1, mid-career salary increases by 0.0000239%, on average and all else constant. As starting salary increases by $1, mid-career salary increases by 2.39%, on average and all else constant. As starting salary increases by 1%, mid-career salary increases by 2.39%, on average and all else constant