In my opinion, the price of bitcoin seems difficult to reach $100k in December because after experiencing a decline in the price of the last few weeks, the price of bitcoin is still not showing a significant increase. Therefore, maybe in December the price of bitcoin will only reach $70k especially now that it has entered the end of 2021.
Currently, the value of every bitcoin is at 51.6k USD and we are now experiencing a price correction and hopefully it will go higher this month before this year will end. Yea, you're right $70k is possible this month after the decline we've experienced, that price is a bit fair but 100k USD? That may sound quite impossible for this year, but in the year 2022, it's very possible for bitcoin to reach that milestone.
if we look at the decline in the price of bitcoin in the last few days, it is quite large because the market capitalization has also fallen greatly. Therefore, if you want to make short-term investments, it would be better to be more careful in the midst of this high volatility in the short term.