Hi tutor, It seems there is a mistake in Q2.16 of Q&A Bank, that, in the solution part, (ii), about the basis to be used, for purchase or sale purpose, it said that, "...the seller might want to use a prudent basis and the buyer might want an optimistic basis...", which understand is contradict with the expression in corresponding part in course notes, in Chapter 11 and 12. Is that typo error here? Thanks for confirm. best regards,