Which of the following acid will give isopentane on decarboxylation with soda lime?

The acid which does not give isopentane on decarboxylation with soda lime, is

Which of following shows highest rate of decarboxylation in presence of soda lime :

Which of the following carboxylic acid can undergo deccarboxylation on simple heating even in the absence of soda lime ?

In order to get propane gas which of the following should be subjected to soda lime decarboxylation?