You define the following regula

单项选择题 You define the following regular expression of currency values: regex tx = new regex("^-?/d+(/./d{2})?$") You are required to write code that will be used to find whether a string in the variable named Bill matches the regular expression or not. You are also required to use this code as the expression in a conditional statement and need to know which code segment to use. What should you do?（）: A、The tx.Matches（Bill）; B、The tx.Equals（Bill）; C、The tx.Match（Bill）; D、The tx.IsMatch（Bill）

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