19. What is the new volume of a solution that is created when 4. 2 mL of a 9. 1 M NaOH stock solution is diluted to a concentration of 2. 8 M? (M1V1 = M2V2 )

A) 6. 0 mL

B) 7. 38 mL

C) 10. 1 mL

D) 13. 65 mL