Alinear piece of viral dna of 8 kb can be cut with either of two restriction enzymes (x and y). these are subjected to electrophoresis and produce the following bands:
cutting the same 8 kb piece with both enzymes will result in bands at 4.0, 2.5, 1.0, and 0.5.
of the possible arrangements of the sites given below, which one is most likely?

a) y between 2 & 3, x between 4 & 5, and y between 6 & 7.
b) y between 2 & 3, x between 3 & 4, and y between 7 & 8.
c) x between 3 & 4, y between 4 & 5, and y between 5 & 6.
d) y between 2 & 3, y between 3 & 4, x between 4 & 5.
e) y between 0 & 1, x between 3 & 4, y between 5 & 6.