Helen and Selena both are sisters. Their father brought a binocular for them one night they were watching the sky. Suddenly they started arguing. Helen said that stars are very large but Selena was saying they are small. As an elder brother how will you convince them?

• A. Give chocolates to both of them
• B. Shout on both of them
• C. Tell them some stars are big and some are small.
• D. Stars are big in size but appear small as they are situated very far from us.