試題詳解

78 You are building a dating service web site. Part of the form to submit a client's profile is a group of radio buttons for the person's hobbies: 20. ＜input type = 'radio' name = 'hobbyEnum' value = 'HIKING'＞ Hiking ＜br＞ 21. ＜input type = 'radio' name = 'hobbyEnum' value = 'SKING'＞ Sking ＜br＞ 22. ＜input type = 'radio' name = 'hobbyEnum' value = 'SCUBA'＞ SCUBA ＜br＞ 23. ＜! - - and more options - - ＞＞ After the user submits this form, a confirmation screen is displayed with these hobbies listed. Assume that an application-scoped hobbies, holds a map between the hobby enumerated type and the display name. Which EL code snippet will display Nth element of the user's selected hobbles?
(A) ${hobbies [hobbyEnum[N]}
(B) ${hobbies [paramValues.hobbyEnum[N]]}
(C) ${hobbies [paramValues @ 'hobbyEnum' @N]
(D) ${hobbies.get(paramValues.hobbyEnum[N]) }
(E) ${hobbies [paramValues.hobbyEnum.get(N)] }