Now assume that Alice and Bob are twins, and Alice left Earthand Bob stayed behind fixing his spaceship. If Alice spent sometime moving near the speed of light before returning to Earth,which statement is correct when Alice returns to Earth?
a. Alice will say that she is younger than Bob, and he willagree.
b. Bob will say that he is younger than Alice, and Alice willsay that she is younger than Bob.
c. Alice will say that she is younger than Bob, and he willdisagree.
