Directions: Complete the passage given below. Candy school organized an inter school quiz competition for class 3 students. The quiz was based on general knowledge. 80 students took part in the quiz competition. The coordinator divided 80 students in groups of 10 student so that there are__(18)__ students in each group. To award the students the coordinator arranged 36 certificates and made 9 groups of the certificates so that there are__(19)__ certificates in each group. When the competition was over students were made to sit in 5 groups to attend the award ceremony so that __(20)__ student sit together. 30 teachers helped the co-ordinator in arranging the activity. The co-ordinator asked the teacher to work in 6 groups so that __(21)__ teachers work together in each group. The school principal was very happy with the coordinator as he did a great job for the whole event.

• A. 15
• B. 16
• C. 17
• D. 18