"has been decreased" is that correct or not?



My boss (he is not a Native English Speaker) said the the sentence "The assortment has been decresed by..." is incorrect and I have to say "has decreased" or "has been reduced"?


Can anyone tell me did I make a mistake or I can use the phrase "Has been decrease"? and Why?


Thank you in advance

Mar 3, 2015 6:31 PM
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English, Russian, Spanish
Learning Language
English, Spanish