pp-1-131 请教这道改错题

非常男女

请教考友, 下面这道改错题, 正确答案是什么. PP伴侣的答案是B(small), 百思不得其解.

As sweeteners, there is very small difference between honey & sucrose, although the former does contain minimal quantities of vitamins, minerals, and amino acids.

PP伴侣 test 1-5, No. 11.