The following JNIProb.java has been compiled, and the javah command has been run to create
the header file JNIProb.h. Which is the correct code that goes into (1) of the C/C++ source file
JNIProb.c created in this way?

A.
int JNICALL Java_JNIProb_add(JNIEnv*env, jobject o, inta, intb)

B.
jint JNICALL Java_JNIProb_add(JNIEnv*env, jobject o, jint a, jint b)

C.
jint JNICALL add(JNIEnv *env. jobject o. int a. int b)

D.
jint JNICALL addfJNIEnv *env, jobject o. jint a. jint b)

Explanation: