Four friends Ayush, Bhavya, Chetan, and Deepanshu are standing at four different points. They considered their locations on a 3-D coordinate plane in such a way that when the locations of the adjacent four friends are joined, the quadrilateral formed is a rhombus. If A(1, 3, 4), B(-1, 6, 10), C(-7, 4, 7) and D( a, b, c) are the points at which Ayush, Bhavya, Chetan, and Deepanshu are standing respectively.
Based on the above information, answer the following question: What is the distance between Bhavya and Deepanshu?