In using transaction data to determine the current value of the subject property, it is important to recognize that general market conditions may have changed since a particular transaction occurred. Property A sold 18 months ago for $235,000 and Property B sold 24 months ago for $215,000. If the two properties are priced today at $239,500 and $232,300, respectively, what is the average monthly rate of increase that can be used to adjust comparable prices for changes in market conditions? 0.09% 0.17% 0.19% 0.23%