Reading Comprehension (RC) | Re: In addition to conventional galaxies, the universe contains

HiExperts,
KarishmaB GMATNinja

I was confused btw D & E in Q96.
96. The author of the passage would be most likely to disagree with which of the following statements?
(D) Astronomers have devised a useful way of estimating the total baryonic mass in the universe.
(E) Astronomers have discovered a substantial amount of baryonic mass in intergalactic space.

"Astronomers have long speculated that the missing baryonic mass might eventually be discovered
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