The glycosidic linkage involved in linking the glucose units in the amylose part of starch is

• A
  $C_{1}-C_{4}$ $\beta$-linkage
• B
  $C_{1}-C_{6}$ $\alpha$-linkage
• C
  $C_{1}-C_{6}$ $\beta$-linkage
• D
  $C_{1}-C_{4}$ $\alpha$-linkage