Your?database?is?in?ARCHIVELOG?mode.?You?lost?an?index?tablespace?due?to?a?disk?failure?while?the?database?was?open.?You?have?neither?a?backup?of?the?lost?index?tablespace?nor?the?scripts?containing?the?CREATE?INDEX?statements?to?recreate?the?indexes.?Currently，?several?users?are?executing?long-running?queries?on?the?database.?What?will?happen?to?the?ongoing?activity?in?the?database？（）
A、 The queries that are currently executing will abort and an error message will be returned to the user.
B、 The queries that are currently executing will execute normally but future queries will not executed.
C、 Data Manipulation Language （DML） statements cannot be performed on the tables on which the indexes are based.
D、 The currently executing and future queries will execute normally， but will be slower
