(51+52+53+………+100) is equal to:  Choose the most appropriate option:
A) 2525 B) 2975 C) 3225 D) 3775 E) 3885
(51+52+53+………+100) = (1+2+3+…….+100)- (1+2+3+4+……+50)   = (100*101)/2 - (50*51)/2   = (5050-1275)= 
<gadget id="calculator">(5050-1275)</gadget>
<output>3_775</output>
3775.   Answer: 3775
<result>D</result>
(51+52+53+………+100) is equal to: