There are four trees—tamarind, coconut, mango and neem—each at a different corner of a rectangular plot. A well is located at one corner and a cabin at another adjacent corner. Tamarind and coconut trees are on either side of the gate which is located at the centre of the side opposite to the side at whose extremes the well and the cabin are located. Mango tree is not at the corner where the cabin is located.
If the coconut tree and the neem tree cannot be at the adjacent corners of the plot, then which of the following will necessarily have to be at diagonally opposite corners of the plot?