多选题 Given the following pseudo-code design for a new accounting system:
class Employee
maintainEmployeeInfo()
connectToRDBMS()
class Payroll
setStateTaxCodes()
findEmployeesByState()
class Utilities
getNetworkPrinter()
Assuming the class and method names provide good definitions of their own functionalities, which are probably true? (Choose all that apply.)

A、 These classes appear to have low cohesion.
B、 These classes appear to have high cohesion.
C、 These classes appear to have weak validation.
D、 These classes appear to have strong validation.
E、 These classes appear to have weak encapsulation.
F、 These classes appear to have strong encapsulation.

【正确答案】 A、E

【答案解析】