Which of the Following Is True About Employee Stock Options

Which of the following is true about employee stock options ESOPS) and regular American exchange-traded call options EXOPS) ? choose three)

A) ESOPS usually cannot be exercised at all times, whereas EXOPS can.
B) ESOPS cannot be traded.
C) The exercise of EXOPS affects the number of shares outstanding.
D) ESOPS can be exercised only at maturity, whereas EXOPS can usually be exercised prior to maturity.
E) Employees are usually liable to forfeit their ESOPS if they leave the company.
F) Shareholders suffer dilution at the time ESOPS are exercised.