题目选项分析

Now generally regarded as a forgery, the Kensington Rune Stone, a 90-kilogram slab of inscribed rock discovered in Minnesota in 1898, was said to have recorded an encounter between Native Americans and Norse explorers in 1362 and thus was cited as evidence that Europeans explored North America in pre-Columbian times.

Now generally regarded as a forgery, the Kensington Rune Stone, a 90-kilogram slab of inscribed rock discovered in Minnesota in 1898, which, said to have recorded an encounter between Native Americans and Norse explorers in 1362, was thus cited as evidence for Europeans exploring North America in pre-Columbian times.