Computer A started a communication sequence with Computer B that has a sequencing number of $300070.$ Computer B accepted the request and sent an acknowledgment number of $300071.$ Until this point, no payload has been exchanged. So far, the sequence numbers have increased by exactly $1$ in each acknowledgment. Now, Computer A sends a payload data that is $800$ bits long. According to you, what will be the acknowledgment number for the return message in this case?

Group of answer choices

$300072$

$300800$

$300871$

$300870$