Vikas spends 40% of his monthly income on food articles, 40% of the remaining in clothes and 50% of the remaining on transportation. He saves Rs. 900 which is 50% of the remaining amount after spending on all the heads. What is the difference between the amount he spends on clothes and transportation?

• A. Rs. 1,200
• B. Rs. 600
• C. Rs. 1,000
• D. Rs. 6,000