If 8 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?	Choose the correct choice:
A) 784
B) 763
C) 120
D) 160
E) 1260
parallelogram can formed by 2 horizontal and 2 vertical lines   for horizontal 8c2   for vertical 8c2   total parallelogram is 10 c2*8c2=28*28= 
<gadget id="calculator">28*28</gadget>
<output>784</output>
784   784NSWER:784
<result>A</result>
If 8 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?