As Compared to Logographic Systems of Writing, Alphabets

As compared to logographic systems of writing, alphabets

A) are more difficult to learn because they require the student to memorize thousands of different symbols.
B) are less capable of expressing complex human thoughts and ideas.
C) require the learner to memorize a far smaller number of characters and is consequently far easier to master.
D) spread slowly throughout Afroeurasia and encountered a great deal of resistance from rulers and scholars.