Which group contains elements that have the following characteristics:
1) At least one is a metalloid.
2) At least one forms an ion with a charge of - 2.
3) At least one is a gas.
4) At least one is a halogen.
A) Oxygen, fluorine, and aluminum
B) Chlorine, sulfur, and silicon
C) Arsenic, oxygen, neon, hydrogen
D) Silicon, magnesium, neon, iodine
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