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）