Which of the following can be used to connect string text?

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Indicate whether the statement is true or false

The statement s1.equalsIgnoreCase(s4) is equivalent to which of the following?

a. s1.regionMatches(true, 0, s4, 0, s4.length()); b. s1.regionMatches(0, s4, 0, s4.length()); c. s1.regionMatches(0, s4, 0, s4.length); d. s1.regionMatches(true, s4, 0, s4.length);