Based on the figure below, what do you think is the possible relationship between BASE and TYPE tables?

Table name: TRUCK

Database name: Ch$03\_$TransCo

Primary key: TRUCK$\_$NUM

Foreign key: BASE$\_$CODE, TYPE$\_$CODE

Table name: BASE

Primary key: BASE$\_$CODE

Foreign key: none

Table name: TYPE

Primary key: TYPE$\_$CODE

Foreign key: none

a$.$ Tables are not related.

b$.1$:$1$ relationship

c$.1$:M relationship.

d$.$ M:N relationshipStudy the following figure. Choose a TRUE statement regarding student.

a$.$ A Graduate entity does not inherit any of Student's attribute.

b$.$ A student can be both a Graduate and Undergrad.

c$.$ Each student must be either a Graduate or Undergrad student.

d$.$ Student can be not a member of Graduate or Undergrad entity.