Question 13 1 Point In JavaScript assume the user entered an integer number in the first text field of the first form. Which of the following is valids statement that add 7 to the user input? document.forms[0].elements[0].value += 7: B document.forms[0].elementstoj.value = document.formspoj.elements[0].value +7; document.forms(0).elements(0).value - parselnt(7): document formsto).elements[0].value = parseInt(document.forms(0).elements[0].value) + 7; Question 14 SQL injection attack can be prevented by: A a. Escaping single quotes in user inputs B b. Using PDO prepared statement C c. Using PDO transaction D) Both (a) and (b)