Critical Reasoning (CR) | Re: One of the most important events for modern astronomy was the series o

There are two conditions that support that there was no water involved in the collisions:
1. none of the comet???s fragments penetrated to Jupiter???s lower atmosphere
2. the comet was composed of rock rather than ice.

Option B covers ONLY the 1st point. Does B need to be NECESSARILY TRUE? What if B is not true and the second condition "the comet was composed of rock rather than ice" holds. We would not need option B as the assumption in that
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