In klumpke's paralysis nerve roots involved are
C6 -C7
C7- C8
C8-T1
T1-T2
In klumpke's paralysis lower trunk of brachial plexus is involved that is mainly T1 and paly C8. C6 is mainly involved in Erb's paralysis along with C5. B D Chaurasia 7th edition Page no: 59
Upper limb