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What is the causes of abnormal wood (CW/TW)?

[A].	To Evarts and Mason (106) it is due to gravity	[B].	Metzger (1908) says it is due to tension and compression
[C].	Wersking and Baily, due to (1942) increase or decrease in plant hormones	[D].	Philips says (1940), it is due to wind
[E].	All of the above

Answer: Option E