"doubted that" vs "doubted whether"

[tacosychelas]

hello!
Could someone explain what's the correct answer and why pleas?
Thanks in advance

During the Renaissance, scholars were uncertain as to the location of Troy, and by the eighteenth century many historians doubted that Troy had ever existed.
A) doubted that Troy had ever existed.
B) doubted whether Troy had ever existed.

answer: A

[blue_lotus]

doubt is a question so is whether , therefore it becomes redundand.

the correct usage here would be doubted that

[jimmy23]

For me the answer is doubted whether.Whats the answer?

[ecz.ozgeuyanik]

I vote for B doubted hetherlooks better...

What is the correct answer?

[camitava]

tacosychelas,
according to me, the sentence is saying that scientists of 18th century had a doubt whether there was a place called Troy. So I will go for B.

[blue_lotus]

Hi,
Some useful information realated to this:
https://www.bartleby.com/116/216.html

Cheers,

[tacosychelas]

the answer is A mates

[smushkas]

Hey there,
Just another link to the rules of using word doubt https://www.wsu.edu/~brians/errors/doubt.html

[amitansu]

My pick is A here.

Whether, in choice B, is redundant.