If \( a, b, c \) are in G.P., \( a-b, c-a, b-c \) are in H.P., then \( a+4 b+c \) is equal to
(A... VIDEO
If \( a, b, c \) are in G.P., \( a-b, c-a, b-c \) are in H.P., then \( a+4 b+c \) is equal to
(A) \( -1 \)
(B) 1
(C) None of these
(D) undefined
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