A & C are fine. "come near" has no obvious useful meaning. A is not the best as circulate & around are sort of redundant. . Make sure you read the memo, when you see it. It will circulate soon. Make sure you read the memo when you see it. It will come round soon. . Remember, maybe that there was life before the internet, just maybe not life as you know it. In offices, memos used to actually circulate on paper & have distribution lists on them, listing people that should go to, one at a time: circulate, or come round would be almost interchangeable here.

I agree with Lao Kou. All of the answers "suck." Time to demand your refund for that book of exercises, ha. The truth is it also depends on what kind of news bulletin. Is it on TV? Is it an email distribution? Is it mailed to you? If it is on TV, you can say "it will be broadcast soon." If it is via email, you can say " it will be sent/distributed/dispatched soon." If it is via snail mail, you can say "it will be dispatched/mailed out soon," etc. "A" would be a good answer if the sentence read: "it will be circulated soon."

Frankly, they all suck. I would say, "come out soon." I *guess* "C" with "come around" having a sense of "arrive". "circulate" has "around" built into it, so it's overkill. "It will come around soon."/"It will circulate soon." -- Still, blech!