The question consists of two statements numbered "I and II" given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. What is the cost price of the article? Statement I: The article is sold at a profit of 20%. If the selling price were Rs. 120 more, the profit would have been 30%. Statement II: The marked price of the article is Rs. 1,500, which is 50% above the cost price.

Let the cost price of the article be Rs. 'x'. Statement I: The article is sold at a profit of 20%. So, initial selling price = 1.20x. If the selling price were Rs. 120 more, the profit would be 30%. So, new selling price = 1.30x. ATQ, 1.30x - 1.20x = 120. Or, 0.10x = 120. Or, x = 1200. So, cost price of the article = Rs. 1,200. Thus, data in statement I alone is sufficient to answer the question. Statement II: The marked price of the article is Rs. 1,500, which is 50% above the cost price. ATQ, 1.50x = 1500. Or, x = 1000. So, cost price of the article = Rs. 1,000. Thus, data in statement II alone is sufficient to answer the question. So, data either in statement I alone or in statement II alone is sufficient to answer the question. Hence, the correct answer is C.