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Option 1 : Only conclusion I follows
[ alt="SSC JE Prakash 24 DEc 50 Q hindi zahida D31" src="//storage.googleapis.com/tb-img/production/20/01/SSC__JE_Prakash_24_DEc_50_Q_hindi_zahida_D31.PNG" style="width: 332px; height: 123px;">
All dashboard is mouse → True (Because all keyboard is mouse hence all dashboard will also be mouse)
some keyboard is printer is a possibility → False (because no mouse can be printer)
Hence only conclusion I follow.
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