Which control should not be used for adding Tool tip?
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ToolTip
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TipWin
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ToolTipWin
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ToolsTips
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B,C & D
The ToolTip component is the correct control for adding tooltips in VB.NET. TipWin, ToolTipWin, and ToolsTips are not valid controls in the VB.NET framework - they appear to be made-up distractors.
The genuine control for tool tips (in VB/.NET-style component sets) is named 'ToolTip'. The other three names — 'TipWin', 'ToolTipWin' and 'ToolsTips' — are not real tool-tip controls and therefore 'should not be used' for adding a tool tip. Since options B, C and D are all invalid/fabricated control names, the correct choice is 'B, C & D'. The phrasing is awkward but the marked answer is internally consistent: only ToolTip is a valid control, so the remaining three are the ones that should not be used.