The simple interest on a sum of money will be Rs.900 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?  Choose the correct option:
A) 1800
B) 2888
C) 1200
D) 2699
E) 2771
P --- 10 ---- 900   P --- 5 ----- 450   3P --- 5 ----- 1350   ------   =&gt; 1800   1800nswer: 1800
<result>A</result>
The simple interest on a sum of money will be Rs.900 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?