Planet B will take more to time to complete its revolution because it is farther to the sun. The shorter planet completes its revolution faster due to its short orbit around the sun. This implies that planets that are close to the sun have shorter time to complete their revolution but those far away will take more than usual.
The Great Rift Valley is currently in the process of splitting the African plate into two different plates, and it's a divergent boundary, moving the Somalian, Arabian and Nubian plate away.
