If a Pharmaceutical Company Wished to Design a Drug to Maintain

If a pharmaceutical company wished to design a drug to maintain low blood sugar levels, one approach might be to

A) design a compound that blocks epinephrine receptor activation.
B) design a compound that inhibits cAMP production in liver cells.
C) design a compound to block G-protein activity in liver cells.
D) design a compound that inhibits phosphorylase activity.
E) All of the above are possible approaches.