3. Get the name and the age of the youngest worker who got A  a. Hints: since the age and grade information are in two different tables (which two?), you'd have to first join the two. Use where clause to join them as discussed in class. b. Then add a clause to the where clause to print only those rows that contain grade 'a'. c. Once you have the workers who got 'a', you can select the youngest following approach similar to question 2.