
If two similar waves are traveling in the same medium, then they have same wave velocity. so we can infer that

Now, as per the formula ~ we know that :

Now, we can write it as :

And it's also given that frequency of wave A is 3 times that of frequency of wave B.
So, let's add the relation to our equation ~



So, choice C is correct ~
Answer:
The dialogue shoes that scrooge doesn't like Fred because Mr. Scrooge doesn't like Christmas and Fred is cheery about it
Explanation:
Answer:
I don't know I'm just answering questions because i need points
Explanation:
ehh can I get a brainless?