What is the total time required to send a 512-bit frame if the sender experiences 4 collisions?

Note: Assume the sender waits the longest possible exponential backoff time after each collision; assume also a bandwidth of 10Mbps.

Hint: Only include the total exponential backoff time, and the time to send 512 bits, in your answer

Group of answer choices

358.4 usec

1382.4 usec

1331.2 usec

768 usec