If an integer object is thrown with a throw statement, then a subsequent catch block has a usable match if the type of the catch argument is A. int B. double C. either (a) or (b) D. neither (a) nor (b)

The correct answer is: A. int

A catch block can catch an exception of a type that is a subtype of the type of the catch argument. In this case, an integer object is thrown with a throw statement. The type of the catch argument is int, which is a subtype of the type of the exception being thrown. Therefore, the catch block has a usable match.

Option B is incorrect because double is not a subtype of int.

Option C is incorrect because only one of the options is correct.

Option D is incorrect because the catch block has a usable match.