A jogging park has two identical circular tracks touching each other, and a rectangular track enclosing the two circles. The edges of the rectangles are tangential to the circles. Two friends, A and B, start jogging simultaneously from the point where one of the circular tracks touches the smaller side of the rectangular track. A jogs along the rectangular track, while B jogs along the two circular tracks in a figure of eight.

Approximately, how much faster than A does B have to run, so that they take the same time to return to their starting point?

(a) 3.88%

(b) 4.22%

(c) 4.44%

(d) 4.72%