##### Gate1996_2.24.

What is the equivalent Boolean expression in product-of-sums form for the Karnaugh map given in Fig.2.24.

(a) $\overline BD + B \overline D$

(b)$(B + \overline C + D) (\overline B + C + \overline D)$
(c) $(B + \overline D) (\overline B + D)$
(d) $(B + \overline D) (B + \overline D)$