Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Student (StuID VARCHAR, age INTEGER)

### Question ###
Show the student id of the oldest student.

### Accurate SQL ###

SELECT StuID FROM Student WHERE age = (SELECT MAX(age) FROM Student)