单选题You define the following regular expression of currency values: regex tx = new regex("^-?/d+(/./d{2})?$") You are required to write code that will be used to find whether a string in the variable named Bill matches the regular expression or not. You are also required to use this code as the expression in a conditional statement and need to know which code segment to use. What should you do?（）AThe tx.Matches（Bill）BThe tx.Equals（Bill）CThe tx.Match（Bill）DThe tx.IsMatch（Bill）
单选题
You define the following regular expression of currency values: regex tx = new regex("^-?/d+(/./d{2})?$") 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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