Meselson and Stahl experimented with E$.$ coli grown first in heavy nitrogen ${(}^{15}(N))$ then in ${?}^{14}N.$ The fact that $q,$ excluded the $$ model of DNA replication $($CHOOSE ALL THAT APPLY$)$

after second round of cell division in ${?}^{14}N,$ some of the DNA sedimented between the ${?}^{15}N$ and ${?}^{14}N$ levels and some DNA contains ${?}^{14}N$ only; semiconservative

after second round of cell division in ${?}^{14}N,$ some of the DNA sedimented between the ${?}^{15}N$ and ${?}^{14}N$ levels and some DNA contains ${?}^{14}N$ only; dispersive

after one round of cell division in ${?}^{14}N,$ the DNA sedimented between the ${?}^{15}N$ and ${?}^{14}N$ levels; semi$-$conservative

after one round of cell division in ${?}^{14}N,$ the DNA sedimented between the ${?}^{15}N$ and ${?}^{14}N$ levels; dispersive

after second round of cell division in ${?}^{14}N,$ some of the DNA sedimented between the ${?}^{15}N$ and ${?}^{14}N$ levels and some DNA contains ${?}^{14}N$ only; conservative

after one round of cell division in ${?}^{14}N,$ the DNA sedimented between the ${?}^{15}N$ and ${?}^{14}N$ levels; conservative