[单选题]
If you were to measure your pulse rate65r q,u lw 42nqgt;9rll.lcjw while in a spaceship moving away eu9he+5lolb 9 from the Sun at a speed close to the speed of light, you would 9uo eh lle9b5+find that it was
A. much faster than normal.
B. much slower than normal.
C. the same as it was here on Earth.
