[求助]OG 10-176

176. As a resuit of the ground-breaking work of Barbara McClintock, many scientists now believe that all of the information encoded in

50,000 to 100,000 of the different genes found in a human cell are contained in merely three percent of the cell's DNA.

D) 50,000 to 100,000 of human cell's different genes is contained in merely

E) the 50,000 to 100,000 different genes found in a human cell is contained in a mere

E is the correct answer.

 The explanation of og is that D does not make clear whether  50,000 to 100,000 represents all or fraction of the genes in cell.

 After i read it several time, i still can't figure out what is the different between those two answers.

why  add " the 50,000 to 100,000" can make this sentece more clear ?

can somebody tell me why or how should i read this sentence?

Thank!