As per the CIC website, one should meet the below requirement when applying for skill level 0 or A.
are all 7 or higher, or
are 6 for any one ability, 7 or higher for any
other two, and 8 or higher for the remaining
ability.
As per below table -
0,A 8 7.0 7.0 7.0 7.0
0, A 7 6.0 6.0 6.0...