Which of the following commands removes all orders placed before April 1, 2009? a. DELETE FROM orders

Question:

Which of the following commands removes all orders placed before April 1, 2009?
a. DELETE FROM orders WHERE orderdate <‘01-APR-09’;
b. DROP FROM orders WHERE orderdate <‘01-APR-09’;
c. REMOVE FROM orders WHERE orderdate <‘01-APR-09’;
d. DELETE FROM orders WHERE orderdate >‘01-APR-09’;