According to Quantum Chromodynamics,the Force That Keeps Quarks Confined Within

Multiple Choice

According to Quantum Chromodynamics,the force that keeps quarks confined within a proton (or neutron) increases as the separation between the individual quarks increases.Which statement below best represents this scenario?

A) The quarks are tied together by nonstretchable strings.
B) The quarks are tied together by elastic strings.
C) The quarks move independently of each other.
D) The force between the quarks has a 1/r² behavior like gravity.
E) The potential energy of a quark decreases with separation.