JEE Main 2012 Chemistry question

The density of a solution prepared by dissolving 120 g of urea (mol. Mass = 60u ) in 1000 g of water is 1.15 g/mL. The molarity of this solution is :

• (1)0.50 M
• (2)1.78 M
• (3)1.02 M
• (4)2.05 MCorrect