11
12
FALSE
TRUE
Answer is Right!
Answer is Wrong!
The correct answer is A. 11.
The IndexOf method returns the index of the first occurrence of a specified string within a string. In this case, the string “VB” is found at index 11, so the output is 11.
Option B is incorrect because the string “VB” is found at index 11, not 12.
Option C is incorrect because the string “VB” is found, so the result is not False.
Option D is incorrect because the string “VB” is found, so the result is not True.