Many Proteins Interact with DNA at Physiological PH Because

Multiple Choice

Many proteins interact with DNA at physiological pH because:

A) proteins are naturally attracted to DNA regardless of the pH.
B) the negatively charged DNA is electrostatically attracted to positively charged regions on proteins.
C) the positively charged DNA is electrostatically attracted to negatively charged regions on proteins.
D) proteins and DNA interact using mainly hydrophobic interactions.
E) both proteins and DNA are at their isoelectric points at physiological pH and tend to aggregate.