Question

Earth’s water content and its source have been a subject of ongoing debate. Two major models address the origin and delivery of water to early Earth.

Model 1 (Endogenous Mantle Source)
This model proposes that Earth accreted 'wet' from planetesimals that formed in the inner Solar System (within 2.5 astronomical units, or $\text{AU}$, from the Sun). These planetesimals contained hydrous silicate minerals that trapped water during their formation. According to Model 1, early Earth's mantle stored large reservoirs of water, which were gradually released to the surface through volcanic outgassing during the Hadean eon. The isotopic composition of hydrogen, specifically the deuterium-to-hydrogen ($D/H$) ratio, of Earth's water is believed to match that of these inner Solar System planetesimals.

Model 2 (Late Veneer Asteroidal Source)
This model proposes that Earth accreted 'dry' due to high temperatures in the inner solar nebula, which prevented water from condensing or remaining bound to inner Solar System planetesimals. Instead, Earth's water was delivered during a 'late veneer' phase—a period of intense bombardment about 100 to 200 million years after Earth's core formation. This delivery occurred via carbonaceous chondrite asteroids originating from the outer Solar System (beyond 2.5 $\text{AU}$). Model 2 assumes that the $D/H$ ratio of Earth's oceans is identical to that of outer Solar System carbonaceous chondrites, which differs significantly from the $D/H$ ratio of primordial inner Solar System materials.

Based on the descriptions of Model 1 and Model 2, is the following statement true or false?

Statement: Model 1 proposes that the deuterium-to-hydrogen ($D/H$) ratio of Earth's oceans is identical to that of carbonaceous chondrite asteroids originating beyond 2.5 $\text{AU}$.