Could you tell me how to use the definite article in the two pairs of sentences below? --<br/><br/>(A) This lake is deepest at this point. <br/>(B) This lake is the deepest at this point. <br/><br/>(C) This is the deepest position in this lake. <br/>(D) This is deepest position in this lake. <br/><br/>Q1 I know that (A) is correct English, but is (B) totally wrong? Or is it still acceptable? <br/><br/>Q2 I think that it is fine with (C), I don't think (D) is right. What do you think?