Given that:
$1.$ $A$ is the mother of $B$;
$2.$ $C$ is the son of $A$;
$3.$ $D$ is the brother of $E$;
$4.$ $E$ is the daughter of $B$.
The grandmother of $D$ is:

$A$ is the father of $C$. But $C$ is not his son. $E$ is the daughter of $C$. $F$ is the spouse of $A$. $B$ is the brother of $C$. $D$ is the son of $B$. $G$ is the spouse of $B$. $H$ is the father of $G$. Who is the grandmother of $D$?

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 $F - R + H \div T,$ how is $F$ related to $T?$

Pointing to the lady on the platform,Manju said,"She is the sister of the father of my mother's son." Who is the lady to Manju?

Pointing to the lady in the photograph,Mrinalini said,"Her son's father is the only son-in-law of my mother". How is Mrinalini related to the lady?

$I.$ $A , B , C , D , E$ 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?