A population of snails is experiencing disruptive selection in terms of their shell patterns. Which statement is most likely true about the population?
Two different shell patterns are increasing in frequency, while the most common pattern is decreasing.
The frequency of the most common shell pattern is becoming higher than all other patterns.
The frequency of a new shell pattern is becoming higher than all other patterns.
Two different patterns are combining into one very common pattern.

Question

A population of snails is experiencing disruptive selection in terms of their shell patterns. Which statement is most likely true about the population?
       Two different shell patterns are increasing in frequency, while the most common pattern is decreasing. 
       The frequency of the most common shell pattern is becoming higher than all other patterns.
       The frequency of a new shell pattern is becoming higher than all other patterns.
       Two different patterns are combining into one very common pattern.