Rounded Up To One

A sender follows RFC 6298 exactly, with α=1/8\alpha = 1/8, β=1/4\beta = 1/4, K=4K = 4 and a clock granularity GG of 1 ms. Two RTT samples have already been folded in:

Sample R′R' RTTVAR after SRTT after
1 90 ms 45 ms 90 ms
2 70 ms 38.75 ms 87.5 ms

The third sample measures R′=150R' = 150 ms. After processing it, what are SRTT, RTTVAR, and the RTO the sender actually arms?

A

SRTT 95.31 ms, RTTVAR 44.69 ms, RTO armed at 140.00 ms

B

SRTT 95.31 ms, RTTVAR 44.69 ms, RTO armed at 1000 ms

C

SRTT 95.31 ms, RTTVAR 44.69 ms, RTO armed at 274.06 ms

D

SRTT 103.13 ms, RTTVAR 41.72 ms, RTO armed at 270.00 ms