$A$ and $B$ are a married couple. $X$ and $Y$ are brothers. $X$ is the brother of $A$. How is $Y$ related to $B$?

$A$ and $B$ are brothers,$C$ and $D$ are sisters. $A$'s son is $D$'s brother. How is $B$ related to $C$?

Pointing to a man in a photograph,a woman said,'His brother's father is the only son of my grandfather'. How is the woman related to the man in the photograph?

These questions are based on the following information. Study it carefully and answer the questions.
$(i)$ $A \times B$ means $A$ is father of $B$.
$(ii)$ $A \div B$ means $A$ is daughter of $B$.
$(iii)$ $A + B$ means $A$ is sister of $B$.
$(iv)$ $A - B$ means $A$ is husband of $B$.
In $G \times T + Q \div M$,how is $M$ related to $G$?

Looking at a portrait of a man,Harsh said,"His mother is the wife of my father's son. Brothers and sisters $I$ have none." At whose portrait was Harsh looking?

$I.$ $A , B , C , D , E$ and $F$ are six members of a family.

$II.$ One couple has parents and their children in the family.

$III.$ $A$ is the son of $C$ and $E$ is the daughter of $A$.

$IV.$ $D$ is the daughter of $F$ who is the mother of $E$.

Who are the male members in the family?