Verify that quadrilateral BCDE is a rhombus with vertices B(5, -1), C(-2, 0), D( -1, 7) and E(6, 6) by showing that all four sides are equal.

A. BD = CE = √50

B. BD = CE = 50

C. BC = CD = DE = EB = 50

D. BC = CD = DE = EB = √50