#include &lt;iostream&gt;    using namespace std;    int gcd &#40;int a, int b&#41;    &#123;        int temp;        while &#40;b != 0&#41; &#123;            temp = a % b;            a = b;            b = temp;        &#125;        return&#40;a&#41;;    &#125;    int main &#40;&#41;    &#123;        int x = 15, y = 25;        cout &lt;&lt; gcd&#40;x, y&#41;;        return&#40;0&#41;;    &#125;
A. 15
B. 25
C. 375
D. 5
Answer:A
#include &lt;iostream&gt;    using namespace std;    int gcd &#40;int a, int b&#41;    &#123;        int temp;        while &#40;b != 0&#41; &#123;            temp = a % b;            a = b;            b = temp;        &#125;        return&#40;a&#41;;    &#125;    int main &#40;&#41;    &#123;        int x = 15, y = 25;        cout &lt;&lt; gcd&#40;x, y&#41;;        return&#40;0&#41;;    &#125;
A. 15 B. 25 C. 375 D. 5
Explanation:In this program, we are finding the gcd of the number.