No laptops are issued to employees who do not submit a signed request form. All administrative employees receive laptops. 
Based on this information, which of the following must be true? 
a. All administrative employees are employees who do not submit a signed request form. 
b. No employees who do not submit a signed request form are administrative employees. 
c. All non-administrative employees are employees who do no not submit a signed request form. 
d. Some administrative employees are employees who do not submit a signed request form. 
e. All employees who submit a signed request form are administrative employees.