Your feeling is correct; B does not fit. The sentence should read Employees are reminded to print only as much as needed so as to avoid wasting paper. Son James 1) Employees are reminded to print only how much is needed so as to avoid wasting paper 2) Employees are reminded to print only what is needed so as to avoid wasting paper Those are OK.
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Son James1) Employees are reminded to print only how much is needed so as to avoid wasting paperThose are OK.
2) Employees are reminded to print only what is needed so as to avoid wasting paper
Son James"Employees are reminded to print only as much as is needed so as to avoid wasting paper"That doesn't seem wrong to me.