12. what is the relationship between the speakers? a. e-pals. b. siblings. c. cousins d. old friends. e. schoolmates 13.from the dialog we know that a. riana always declines andra's idea b. riana and andra will go to alfa robotic course c. riana will accompany andra to the course d. riana agrees with andra's suggestion to attend a course e. riana and andra are going to attend a robotic course 14. how does riana find the suitable robotic course for her? a. browsing the internet. b. having andra's recommendation, c. reading a robotic course pamphlet. d. receiving a promo from a short message. e. reading an advertisement in a newspaper,​