explain briefly

The C function below is intended to find the index of the last instance of the character find within the string str. For example, if the character appears at the start of the string the function returns 0. Irind does not appear within str, the function returns - 1. int last_one (const char* str, char find) const char* s; int for ; '\0' - *s; 3++) // blank #1 // blank #2 // blank #3 // blank #4 if // blank 45 return Circle EXACTLY ONE ANSWER to indicate what should appear in each blank in the code above. 1. (5 points) blank #1 A) * - -1 B) X- O C ) x D) char* x E) - find 2. (5 points) blank #2 A) 3 - Gfind B) x++ C) s - str D) - -1 E) ++ x 3. (5 points) blank #3 A) &find = 3 B) X - * C) find -- +5++ D) '10' - ++ E) find -- * 4. (5 points) blank #4 A) x + 1 B) -1 C) find D) S - str E) S - find 5. (5 points) blank #5 A) ++find B) S - str C) - find D) E) --X