Match List - I with List - II.

Choose the correct answer from the options given below :

A) Chain isomer - Both have the formula $$(C_{4}H_{8})$$ but different carbon skeletons (branched vs. straight chain).

B)Stereo isomers - They have the same connectivity but differ in the spatial arrangement of atoms around the double bond.

C)Functional group isomers - Both have the formula $$(C_4H_{10}O)$$ but belong to different functional classes (alcohol vs. ether).

D)Position isomers - They have the same carbon chain but the double bond is at different positions (C1 vs. C2).

                      But-1-ene