String sentence;String str1, str2, str3, str4;int length1;sentence = "First exam is on Monday.";str1 = sentence.substring(6, 12);str2 = str1.substring(0, 4);str3 = sentence.replace('i', '#');str4 = sentence.indexOf("on");length1 = sentence.length();Based on the code above, what is the value of length1?

A. 20
B. 21
C. 24
D. 26

Answer: C

Computer Science & Information Technology

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