Two blocks \( A \) and \( B \) each of mass \( m \) are placed on a smooth horizontal surf...

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Two blocks \( A \) and \( B \) each of mass \( m \) are placed on a smooth horizontal surface. Two horizontal forces \( F \) and \( 2 F \) are applied on the two blocks \( A \) and \( B \) respectively as shown in figure. The block \( A \) does not slide on block \( B \). Then the normal reaction acting between the two blocks is:
(a) \( F \)
(b) \( F / 2 \)
(c) \( \frac{F}{\sqrt{3}} \)
(d) \( 3 F \)
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