I have some stock names in Column A, I have some "Buy" or "sell" in column B,
I have Transaction amount written in Column C

I will specify the stock name in Cell D1, I want the total "Buy" amount for
that particular stock in Cell D2. For this there should be a function in Cell
D2 which adds values in Column C if the Stock name in Column A is equal to
Cell D1 and has "Buy" written in Column B

Example

GESCOR Buy 250
LARTOU Sell 40
GVKPOW Buy 1000
ENGIND Sell 101
RELCOM Sell 200
TATPOW Sell 10
RELIND Sell 10
TISCO Sell 350
RELCOM Sell 100
SESGOA Buy 250
TATPOW Sell 20
INFTEC Sell 40
RELPOW Buy 200
RELCOM Sell 100
TATPOW Buy 25
BHATE Buy 35
ENGIND Buy 101
TATPOW Buy 25
RELCOM Buy 100


Cell D1-- If I input TATPOW then Cell D2 should give me value 50