Which of the following describes a saturated solution?
40 grams of K2Cr2O7 dissolved in 50 grams of water at 35 C

85 grams of KCl dissolved in 200 grams of water at 100 C

45 grams of KNO3 dissolved in 200 grams of water at 30 C

10 grams of NaCl dissolved in 25 grams of water at 90 C