Construct the requested tree diagram.Construct a tree diagram that shows all possible 2-letter code words using only the letters c and d without repetition.
A.
| /\ |
| c | d |
| /| | | |
| c | d | c |
B.
| | |
| c |
| | |
| d |
C.
| /\ |
| c | d |
| /\ | /\ |
| c | d | c | d |
D.
| /\ |
| c | d |
| | | | |
| d | c |
Answer: D
Mathematics
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