What type of orbitals overlap to provide stability to the tert-butyl carbocation by hyperconjugation? a. 3degree C 2p atomic orbital + 3degree C sp 2 atomic orbital b. 3degree C 2p atomic orbital + methyl C-H sigma molecular orbital c. 3degree C sp 2 atomic orbital + methyl C-H sigma molecular orbital d. 3degree C 2p atomic orbital + methyl C 2s atomic orbital