આપેલી પ્રક્રિયામાં
$CH_3-CH(OTs)-CH_2-CH_2-CH(OTs)-CH_3$ $\xrightarrow[(ii) \ KOH]{(i) \ SH^{\ominus} (one \ equivalent)}$ $[X]$
$[X]$ શું હશે :

• A
  $CH_3-CH(OTs)-CH_2-CH_2-CH(S^{\ominus})-CH_3$
• B
  $CH_3-CH(S^{\ominus})-CH_2-CH_2-CH(S^{\ominus})-CH_3$
• C
  $2,5-dimethyltetrahydrothiophene$
• D
  $2,6-dimethyltetrahydrothiopyran$