I am a retired bank officer. Our son is a student on CPT (no income). All his expenses are being funded by us. We, his parents, wish to visit him for 3 months. My nephew is sponsoring our visit. All expenses including airfare, living expenses, will be borne by us. I have sufficient property and liquid funds for the visit. My wife knows very little of our son’s university, course of study,etc. Will the visa interview be conducted combined for us, and can I answer all the questions of the VO.