Study the following information carefully and answer the question given below
There are six members in a family in which there are two married couples.
2. Sandhya, a lawyer, is married to the engineer and is mother of Charu and Suraj.
3. Bhuvanesh, the teacher, is married Aruna.
4. Aruna has one son and grandson. 5. Of the two married ladies one is a housewife.
6. There is also one student and one male doctor in the family.
How is Aruna related to Charu?

Options

A. Sister
B. Mother
C. Grandfather
D. Grandmother