A jeweller made a piece of uniquely designed diamond necklace and the selling price was fixed at Rs.10,00,000. In making this piece, on the raw material, the jeweller had invested Rs.3,00,000 and had paid a labour charge of Rs.2,00,000. If 20% of the raw material cost was of gold, what is the actual amount the jeweller had spent in procuring the gold?_x005F_x000D_

• A. Rs. 1,60,000
• B. Rs. 1,08,000
• C. Rs. 3,60,000
• D. Rs. 60,000