Given the code fragment: String str = "Java is a programming language"; ToIntFunction<String> indexVal = str: : indexOf;//line n1 int x = indexVal.applyAsInt("Java");//line n2 System.out.println(x); What is the result? 

Answer options:

A. 0
B. 1
C. A compilation error occurs at line n1.
D. A compilation error occurs at line n2.

A