In the question given below, a part of the sentence is in bold and italicised. Below are given alternatives to the bold and italicised part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, choose option 'D' as the answer.
The poor villagers have waited in the bitter cold for more than 4 hours now.
have been waiting
had waited
has been waiting
No improvement
Correct answer is A
No explanation has been provided for this answer.