Final answer:
The code that represents the drug and units given for a 2,400,000 U injection of Bicillin L-A is 'Bicillin L-A injection.'
Step-by-step explanation:
The code that represents the drug and units given for a 2,400,000 U injection of Bicillin L-A is option 4) Bicillin L-A injection.
When describing a medication, it is important to include both the name of the drug and the route of administration.
In this case, the drug is Bicillin L-A and the units given are in injection form, hence the correct code is 'Bicillin L-A injection.' This combines the name of the drug (Bicillin L-A) with the amount (2,400,000 U), providing clear information to healthcare professionals.