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Generally seeds of species growing in cool temperate and dry tropical areas need some sort of pre-sowing treatment is/are:

[A].	Weathering: Seed is exposed to sunlight, wind and rain	[B].	Mechanical treatment: In order to break hard seed coat seed is beaten or crushed
[C].	Fire treatment: Seed is covered with grass etc. And grass is put on fire	[D].	Water treatment: Seed is soaked in hot or cold water for some hours or even days before sowing
[E].	All of the above

Answer: Option E