Options complete the following sentence for each of these investors:

a. A buyer of call options.

b. A buyer of put options.

c. A seller (writer) of call options.

d. A seller (writer) of put options. “The (buyer/seller) of a (put/call) option (pays/receives) money for the (right/obligation) to (buy/sell) a specified asset at a fixed price for a fixed length of time”