Ram professes to sell his goods at the cost price but he made use of 900 grms instead of a kg, what is the gain percent?  Choose the correct choice from the following choices
A) 11 1/98%	B) 11 9/9%	C) 11 1/9%	D) 12 1/9%	E) 41 1/9%
900 --- 100   100 --- ? =&gt; 11 1/9%   Answer:11 1/9%
<result>C</result>
Ram professes to sell his goods at the cost price but he made use of 900 grms instead of a kg, what is the gain percent?