Identify the logical compound sentence.
a. Plans A and B are safe and convenient options as retirement investments.
b. Jill will photocopy the letters, and Adam will type the envelopes.
c. Although the data was received after the deadline, we still managed to complete the project within one week.
d. Please purchase paper clips, pencils, and notebooks when you go to the office supply store.
e. Doug types words per minute, and Amy sings in the choir.
Answer: Jill will photocopy the letters, and Adam will type the envelopes.