What is the relationship between a wireless client’s data rate and the throughput for the client’s traffic?

What is the relationship between a wireless client’s data rate and the throughput for the client’s traffic?
A . The throughput is 90 percent of the data rate.
B . The throughput is equal to the data rate multiplied by the connection time, minus the headers’ bytes.
C . The throughput is less than the data rate and also depends on factors such as number of clients in the cell.
D . The data rate and the throughput are equivalent.

Answer: B