opt for ? opt between?

有冇opt between? 請解釋同比例子
是有的。解釋： 從幾個選擇揀一個較好的(to
make a choice, especially for one thing or possibility in preference to
any others)例子 ：Help me to opt between Nokia N79 and Nokia 6700?Please help me to opt between spark ls and alto lxi.Is commerce is the better option to opt between science and commerce?(來源見參考資料)

If you want to use the word 'opt' to express a choice bwteeen A and B, it can be as follows:
Example:
You have to opt for either A or B.

Opt (for)　所指的選擇對象是行動而不是項目，　且有權衡利弊之意
E.g. Most people opt for buying their own homes rather than renting them.


如用between 作為介詞, Choose (between A and/or B) 較合適。
用choose表示的是自由作出的決定，可僅指兩者之間。
E.g. You had to choose between giving up her job or hiring a nanny.




Ref: OXFORD ADVANCED LEARNER’S ENGLISH-CHINESE DICTIONARY