[单选题]
Suppose one twin takes a ride in a spachm/ 5w8nsoy tze euy.2t3f6k8e ship traveling at a very high speed tob+.chx,cn fi(wzny) 7 a distant star and back again, while the other twin remains on Earth.)cy in7. (z hnbwcxf+, The twin that remained on Earth predicts that the astronaut twin is
A. younger.
B. the same age.
C. older.
D. cannot be determined from the given information
Post time 2024-1-14 16:03:04