For the following serial dilution scheme, what is the NaOH concentration of tube C? How many times more dilute is the NaOH in tube C compared to the stock 3M NaOH? (6 points total)

A. Concentration of tube C: 0. 5M, 6 times more dilute
B. Concentration of tube C: 1M, 3 times more dilute
C. Concentration of tube C: 1. 5M, 2 times more dilute
D. Concentration of tube C: 2M, 1. 5 times more dilute