public static string Concat(string str0, string str1)
a) method returns a string
b) string str1 is concatenated to the end of str0
c) can be used to concatenate any number of strings
d) all of the mentioned
public static string Concat(string str0, string str1)
a) method returns a string
b) string str1 is concatenated to the end of str0
c) can be used to concatenate any number of strings
d) all of the mentioned
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d
Explanation: This method returns a string that contains str1 concatenated to the end of str0. Another form of Concat(), shown here, concatenates three strings:
public static string Concat(string str0, string str1, string str2). Hence, any number of strings can be concatenated using this method.