Suppose, you have a DBMS management system of students that have the following entities: Name, Student$\_$number, Class, Course$\_$name, Course$\_$number, etc. Here, Course$\_$number has a data type of XXXNNNNN$.$ Which of the following is the meaning of XXXNNNNN$?$

Question $8$ options:

A type with three alpha character followed by five digits

A type with four alpha character followed by four digits

A type with three digits followed by four alpha character

A type with four digits followed by five alpha character