[单选题]
What happens to the total relativistic eyi.vt-p7dpnxz y20j;sv; nd( ss),k unergy of a speedy protq)ls*id pw 2s,;f p,eton when its relativistic mass doubles?; eps2f)w,tqs,lip d*
A. It doubles.
B. It more than doubles.
C. It less than doubles.
D. It must increase, but it is impossible to say by how much.