Solution 2 Connecting with B“a” would not only be unnecessarily submissive, but overconcentrated as well!
Instead, B2 not only indirectly defends the cutting point, is “light”, but also isolates and attacks W1.
Not as strong, but still better than “a”, would be B“b”, which also attacks W1.
And if Black isn’t particularly concerned with W1 but still desires to reinforce his group here while aiming at the upper Whites, then B “c” might be a good choice.