Create table with the following specifications:

Student

Field Name	Data Type	Comments
fName	Maximum 20 character	Key
lName	Maximum 20 character
Gender	One character	Must be F or M
GPA	DECIMAL(3,2)	CHECK constraint to ensure GPA greater than zero

1. Write SQL statement that insert student record in table with following values ahamd Ali ,Male and his GPA =3.5

2. Add new column to the table student its name serialNumber .

3. Remove CHECK constraint on GPA