What is a NULL value? Which of the following SELECT statements displays a list of customer names from the CUSTOMERS table? a. SELECT customer names FROM customers; b. SELECT "Names" FROM customers;...

What is a NULL value?

Which of the following SELECT statements displays a list of customer names from the

CUSTOMERS table?

a. SELECT customer names FROM customers;

b. SELECT "Names" FROM customers;

c. SELECT firstname, lastname FROM customers;

d. SELECT firstname, lastname, FROM customers;

e. SELECT firstname, lastname, "Customer Names" FROM customers;