A jeweller made a piece of uniquely designed diamond necklace and the selling price was fixed at ₹ 10,00,000. In making this piece, on the raw material, the jeweller had invested ₹ 3,00,000 and had paid a labour charge of ₹ 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?

A

₹ 1,60,000

B

₹ 1,08,000

C

₹ 3,60,000

D

₹ 60,000