单选题 Which of the following, if true, would cast the MOST doubt on scientists' most recent explanation for the origin of the ocean's water?

• (A) Meteorites contain only twice, and not ten times as much xenon as regular sea water.
• (B) Local water from the solar nebula is found to contain as much xenon as meteorites.
• (C) Water from the solar nebula contains less deuterium than was previously thought.
• (D) Comets containing more than twice the amount of deuterium than was previously thought.
• (E) More than twice as many meteorites as comets existed in the solar system at the time of the Earth's formation.