(1 pt.) Which solution has the highest concentration?
A2.5 mole of NaCl in 1.5 L
B1.5 mole of NaCl in 1.5 L
C2.5 mole of NaCl in 15 mL
D1.5 mole of NaCl in 15 mL
A2.5 mole of NaCl in 1.5 L
B1.5 mole of NaCl in 1.5 L
C2.5 mole of NaCl in 15 mL
D1.5 mole of NaCl in 15 mL