题干是 FORECASTING: a positively sloped yield curve with a decline inshort rates of 25basis points and an increase on long rates of 75basisi points

QUESTION 29问 given the yield curve forecast,the most appropriate porfolio would be a   short duration bullet portfolio.

请问，这个BULLET 按提议应该是理解为BULLET STRUCTURE with long-term maturity 吧？？请教一下如考试时候碰到题干或者答案没对BULLET的MATURITY做清晰描述时，我们该怎么办？？因为如果考生分别理解成 SHORT ,INTERMEDIA ,LONG，那么所得出的结果肯定不相同，请大家帮忙下