Various solutions were prepared by dilutions from a 50 mL stock solution as follows: Solution A: 5 mL of the stock solut

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Various solutions were prepared by dilutions from a 50 mL stock
solution as follows:
Solution A: 5 mL of the stock solution were taken and diluted to 25
mL with water.
Solution B: 1 mL of solution A was taken and diluted to 25 mL
with water.
If the concentration of solution B is 2.30 x 10 -2 M, then the
concentration of the stock solution is:
a. 0.575M
b. 5.75M
c. 2.88M
d. 1.15M
e. 0.230M