Perimeter  =  140  yards  means, 
	side  =   ´  140  =  35  yards  =  35  ´  3  =  105  feet.
      ´  140  =  35  yards  =  35  ´  3  =  105  feet.
	\   Area  =  105  ´  105  sq. ft.  =  11025  sq. ft.
	Hence  B.	
	(Note  : From the choice of answers, it can be seen that there is no need to actually multiply 105 by 105 since its value should be very close to 100 ´ 100 = 10000 and only 11025 fits the bill.)