Parcels A, B, and C are located side by side and owned by three different owners. A is worth $20,000, B is worth $27,000, and C is worth $16,000 for a total of $63,000. A developer believes that if all three can be purchased, the larger parcel would be worth $85,000. By assembling these under one owner they would be worth $22,000 more than their individual values. This demonstrates which principle of value A valid joint tenancy must have the four unities of:

a. time, title, interest, remainder

b. title, time, possession, interest

c. interest, right, possession, time

d. time, title, occupancy, possession