If 10 parallel lines in a plane is intersected by a family of another 8 parallel lines, how many parallelograms are there in the network thus formed?
Select the correct option
A) 80
B) 63
C) 120
D) 160
E) 1260
parallelogram can formed by 2 horizontal and 2 vertical lines   for horizontal 10c2   for vertical 8c2   total parallelogram is 10 c2*8c2=45*28= 
<gadget id="calculator">45*28</gadget>
<output>1_260</output>
1260   ANSW1260R:1260
<result>E</result>
If 10 parallel lines in a plane is intersected by a family of another 8 parallel lines, how many parallelograms are there in the network thus formed?