Glucagon secreted by the alpha-cells of the islets of Langerhans does this function

Options

(a) Glucagon converts glucose into glycogen and increases the concentration of blood sugar
(b) Glucagon converts glycogen into glucose and increases the concentration of blood sugar
(c) Glucagon converts glucose into glycogen
(d) None of these

Correct Answer:

Glucagon converts glycogen into glucose and increases the concentration of blood sugar

Explanation:

Stored glycogen is broken down to glucose under the effect of glucagons secreted by alpha cells of Islets of Langerhans.