i know the difference between put and call options, but unsure about the long/short call vs long/short put. are my answers correct?+ what is the exact definition for long/short put/call ?

Thank you.

What options position is associated with a. The right to buy an asset at a specified price? O Short put O Short call Long call O Long put b. The right to sell an asset at a specified price? Long put O Short put O Long call O Short call c. The obligation to buy an asset at a specified price? short call O Short put O Long call O Long put d. The obligation to sell an asset at a specified price? O Long call Short put O Short call O Long put