下列何者為Edwardsiella tarda與Citrobacter freundii 的ONPG試驗結果？
Edwardsiella tarda (＋)，Citrobacter freundii (＋)
Edwardsiella tarda (＋)，Citrobacter freundii (－)
Edwardsiella tarda (－)，Citrobacter freundii (＋)
Edwardsiella tarda (－)，Citrobacter freundii (－)
