Ugh, now that I see where the confusion was regarding the word “should”, I’m actually surprised I got this question right in the first place. Depending on how you interpret the word “should”, it completely changes the meaning of the question. And the term is used ambiguously in this question.
Notice 10% of equity, its high return(increasing weight) could make Croniser’s statement invalid. An extreme case is: stock rises while bonds fall due to inflation.