The correct option is B C.P. = S.P.
When selling price (S.P.) of an article is more than the cost price (C.P.), i.e., S.P. > C.P., then a profit is earned in the transaction.
Profit = S.P. - C.P.
When cost price (C.P.) is more than the selling price (S.P.),
i.e., C.P. > S.P., then a loss has been incurred in the transaction.
Loss = C.P. - S.P.
But, when C.P. = S.P., then there is neither loss nor profit.