【单选题】

Questions 18 to 20 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions.

Now, listen to the passage.
According to the speaker, why do coastal areas receive more rain than inland regionA．Ocean water makes the areas moisturous.
B．Salts escape from the ocean to create rain drops in the air.
C．Water evaporates to form cloud in the atmosphere, which helps to produce rain.
D．High salinity level increases evaporation and condensation so as to create more rain.