Answer:
.A) violation because the agent acted without discretionary authority
Step-by-step explanation:
Discretionary authority allows the agent to take certain courses of action which may not require prior approval from the client hence discretionary.
He is asked to reduce losses and discretionary authority does not affect his timing and execution and so his first actions to wait for profit does not violate discretionary authority. However the agent did not have discretionary authority in the above case and hence had no right to decrease the sale of the shares to 50.