OG12 Q93 more than与数量词

Heating-oil prices are expected to be higher this year than last because refiners are paying about $5 a barrel more for crude oil than they were last year

A Heating-oil prices are expected to be higher this year than last because refiners are paying about $5 a barrel more for crude oil than they were

B Heating-oil prices are expected to rise higher this year over last because refiners pay about $5 a barrelfor crude oil more than they did

A是正确答案:关于这道题有个小疑惑

对于为什么B是错的，OG上给出了2点解释：

1）higher。。。than。。。用over代替than不行～

2）in the second clause，the comparative terms more than should immediately follow $5 a barrel

是不是more than在与数量词搭配的时候，more 要紧跟在数量词的后面，这是gamt考试的规定么，因为在手头的语法书上都没有找到相关的规定，而且我觉得B选项数量词和more than 之间只插了个crude oil，这样都不可以么？

be higher更好 但rise higher没语法错误的  主要是比较级要和than连用

第二点 这就是个语言习惯问题 就是这么说的 中文有些语序也不能随便颠倒 比如我们就说这题 中文我们可以说 每一桶原油多花5元 没见过每一桶多花5元原油这种说法吧

谢谢楼上