Which of the following statements contains an error?

i. char gender = genderstring. charat(0);
ii. boolean isfemale = gender == "f";
iii. int age = integer. parseint(agestring);

a. i only
b. ii only
c. iii only
d. i and ii only
e. ii and iii only

I. is syntactically correct if genderString exists. if genderString, for example, is "Male", then char gender would be the character at index 0 (the first character), meaning 'M'.

II. is incorrect. It is using the comparison operator (==) instead of the assignment operator (=). It is also setting a boolean variable to a String value of 'F'. Boolean values cannot hold string values, and can only hold true & false. 

III. is correct if ageString only contains numbers (presumably, it does, as it's called ageString). Integer.parseInt is a function that converts String values to integer values if the string values only contain numerical characters.

The answer in this case should be B. II only.

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