What might be the ultimate result of a biased bitter criticism

A．ignore minor imperfections
B．overemphasize flaws
C．see both sides of a coin
D．pin their hopes on improvements

A．explain that staging a play requires complex teamwork
B．argue that a minute mistake may ruin a lifelong task
C．show that the preparatory stage is imperative t the following ones
D．illustrate that criticism may block the way to success