If a Circular DNA Containing No Supercoils Is Incubated with Ethidium

Multiple Choice

If a circular DNA containing no supercoils is incubated with ethidium bromide

A) the number of twists will increase,positive supercoils will develop,and the linking number will remain the same.
B) the number of twists will decrease,positive supercoils will develop,and the linking number will remain the same.
C) the number of twists will increase,negative supercoils will develop,and the linking number will remain the same.
D) the number of twists will decrease,negative supercoils will develop,and the linking number will remain the same.
E) the linking number will be altered,and both the writhing number and twist will adjust accordingly.