Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Investor believes that the mean price of houses in the area is greater than $135,000. A random sample of 25 houses in the area has a mean price of $139,750. The population standard deviation is $24,000, and he wants to conduct a hypothesis test at a 1% level of significance. The value of the calculated test statistic is closest to:
Option A:0.67.
Option B:0.99.
Option C:2.00.

Answer: B