Joshua, a manager, instructed his subordinate, Leona, to mobilize their team and prepare a report on how the office could be made more...

Joshua, a manager, instructed his subordinate, Leona, to mobilize their team and prepare a report on how the office could be made more environmentally friendly. Leona misunderstood Joshua and explained to her team members that their manager wanted them to minimize the usage of office resources. In this context, why would it have been better for Joshua to communicate to Leona through an email instead of instructing her orally? 

       A. The sender can provide feedback immediately.   B. The receiver can control where and when a message is read.   C. The receiver can gauge the sender's sincerity better than when communicated orally.   D. The message remains the same even if relayed through others.