Write a one sentence explanation for the following statement:

the presence in liver of glucose-6-phosphatase is essential to the function of the liver in synthesizing glucose for use by other tissues.
a. glucose-6-phosphate must be hydrolyzed in order for glucose to exit the liver cell and be exported to other tissues.
b. glucose-6-phosphate must be fully ucleaved in order for glucose to exit the liver cell and be exported to other tissues.
c. glucose-6-phosphate must lower the energy barier of desorption in order for glucose to exit the liver cell and be exported to other tissues.
d. glucose-6-phosphate must be activated in order for glucose to exit the liver cell and be exported to other tissues.