Among the following, choose the correct SQL statement to create a table named Employee with attributes EmployeeNo, Name, Address, Age, Job, Salary where EmployeeNo must be unique and not null and Age must be greater than 21. 

Answer Choices:

Employee(EmployeeNo INTEGER UNIQUE, INTEGER, Job 

a. CREATE TABLE VARCHAR2(30), Address VARCHAR2(30), Age VARCHAR2(30), Salary real, CHECK(Age21)); Name 

b. CREATE Employee(EmployeeNo INTEGER primary key, Name VARCHAR2(30), Address VARCHAR2(30), Age INTEGER, Job VARCHAR2(30), Salary real, CHECK(Age 21)); 

c. CREATE TABLE Employee(EmployeeNo INTEGER primary key, Name VARCHAR2(30), Address VARCHAR2(30), Age INTEGER, Job VARCHAR2(30), Salary real, CHECK(Age 21)); 

d. CREATE TABLE Employee(EmployeeNo INTEGER NOT NULL, Name VARCHAR2(30), Address VARCHAR2(30), Age INTEGER, Job VARCHAR2(30), Salary real, CHECK(Age 21)