Which of the following is a valid JavaScript statement? a. document.write('Boston, MA is called 'Beantown.'') b. document.write("Boston, MA is called "Beantown."") c....

Which of the following is a valid JavaScript statement?

a. document.write('Boston, MA is called 'Beantown.'')

b. document.write("Boston, MA is called "Beantown."")

c. document.write("Boston, MA is called 'Beantown."')

d. document.write("Boston, MA is called 'Beantown.'")