The correct option is A March 21, September 23
From summer solstice (June 21), the Sun starts moving towards the South and from winter solstice (December 22), the Sun starts moving towards North. So during summer solstice, it is in the south eastern part and in winter solstice it is in the north eastern part. However, there are 2 days, i.e., March 21 and September 23, when the Sun rises exactly in the East.