The second choice is the correct answer I believe. Mid-line is always at the end so the only options you would have is the second choice and the last but you cant have your period equal to zero.
I know it's late but, 25 ft ÷ 4 cm = 6.25 500 ÷ 6.25 = 80 750 ÷ 6.25 = 120 and so your answer is C.<span> 80 centimeters by 120 centimeters and again sorry it's late :D</span>