Same concept beta keto acid hai decarboxylation hoga...then negative charge aayenge ...double bond bridge head pe dono me so least stable honge...but 2nd one is somehow stable than...
II >I
after decarboxylation, carbanion is formed so here we will check stability of carbanion.
In the 1st case carbanion have less tendancy to resonate will C=O according to bridts...