A company needs to deploy a chatbot to answer common questions from customers. The chatbot Must base its answers on company documentation.Which solution will meet these requirements with the LEAST development effort?

A、IndexcompanydocumentsbyusingAmazonKendra.IntegratethechatbotwithAmazonKendraByusingtheAmazonKendraQueryAPIoperationtoanswercustomerquestions.
B、TrainaBidirectionalAttentionFlow(BiDAF)networkbasedonpastcustomerquestionsandCompanydocuments.Deploythemodelasareal-timeAmazonSageMakerendpoint.IntegratetheModelwiththechatbotbyusingtheSageMakerRuntimeInvokeEndpointAPIoperationtoanswerCustomerquestions.
C、TrainanAmazonSageMakerBlazingTextmodelbasedonpastcustomerquestionsandcompanyDocuments.DeploythemodelasarealtimeSageMakerendpoint.IntegratethemodelwiththeChatbotbyusingtheSageMakerRuntimeInvokeEndpointAPIoperationtoanswercustomerQuestions.
D、IndexcompanydocumentsbyusingAmazonOpenSearchService.IntegratethechatbotwithOpenSearchServicebyusingtheOpenSearchServicek-nearestneighbors(k-NN)QueryAPIOperationtoanswercustomerquestions.