At times, a specific fragment of the molecules of DNA which are analyzed needs to be separated. One of the methods is digesting the gels simply. Which of the following statement is not correct in with respect to it?

• A. The gelling temperature has an important role to play
• B. For higher gelling temperatures, digestion of DNA is done via the addition of agarase or some chaotropic agents
• C. For lower gelling temperatures, simply slicing out of target DNA is done which is followed by melting
• D. The DNA can be extracted via the addition of sodium or any positively charged group