R$$_f$$ value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is 0.42. 2-methylpropene is treated with dilute H$$_2$$SO$$_4$$ to give major organic product (X). R$$_f$$ value for (X) in the same solvent system under identical condition will be:

A

0.42

B

0.82

C

0.62

D

0.12