Siva has been appointed as an agent by Ah Chong. He has the authority to sell

goods on credit to third parties. He sold goods amounting to RM20,000 to Rahimi on

credit without making proper enquiries on Rahimi's ability to pay. Unknown to Siva,

Rahimi had been declared bankrupt at the time he supplied the goods to Rahimi.

Which of his duties as an agent has Siva breached?

A. Duty to obey the principal's instructions

B. Duty to exercise care and diligence

C. Duty to communicate with the principal

D. Duty to render proper account to the principal