Ravi and John had 20 rupees each. Both of them went to market. John bought a pen of worth Rs. 10. Ravi wanted to buy a ribbon and a greeting card for her mother's birthday. After reaching shop. Ravi came to know that cost of ribbon is Rs. 12 and greeting card is Rs. 15. So, he got sad. According to you what John should do in such condition?

• A. John should purchase his items and go back to home.
• B. John should give his extra money to Ravi to purchase the items.
• C. John should advise Ravi to buy two ice creams of worth Rs. 10 for both of them instead of buying ribbon and greeting card.
• D. Either (a) or (c).