Which of the following can be obtained on Hydroboration oxidation reaction of Propyne?

3CH3–C≡C–H→BH3(CH3–CH=CH-)3B→H2O2,NaOH3CH3–CH=CH–OH⇌ 3CH3–CH2–CHOIn the above reaction we can see the reaction follows anti Markonikovs addition followed by oxidation. In last step tautomerism will occur