Which two statements would select salaries that are greater than or equal to 2500 and less than or equal to 3500? (Choose two)
a) Salary > 2500 AND Salary < 3500
b) Salary >= 2500 OR Salary <= 3500
c) Salary < 2500 AND Salary > 3500
d) Salary >= 2500 AND Salary <= 3500