You are given the query Q= “online courses” and two documents: D1 = “online courses search engine” D2 = “online education is affordable”

You are given the query Q= “online courses” and two documents:

D1 = “online courses search engine”

D2 = “online education is affordable”

Assume you are using the maximum likelihood estimator without smoothing to calculate the probabilities of words in documents (i.e., the estimated $p(w|D)$ is the relative frequency of the word $w$ in the document $D$). Based on the unigram query likelihood model, which of the following choices is correct?