In a triangle, one side is half the longest side, and the third side is 14 feet less than the longest side. The perimeter is 61. Find all three sides.
a. 20 ft, 40 ft, 1 ft
b. 18 ft, 36 ft, 7 ft
c. 22 ft, 44 ft, 5 ft
d. 24 ft, 48 ft, 3 ft