单选题In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.ArollersBbreakersCwhite capsDsurfers
单选题
In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.
A
rollers
B
breakers
C
white caps
D
surfers
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