Identify the sentence that uses parentheses to correctly set off examples or words that specify.
a. Our neighbor Alicia offered to buy the soccer net from Waldo (for 10 ).
b. Waldo has sports equipment (e.g., a basketball, two baseball gloves, a soccer net) that he never uses anymore.
c. Waldo used to play soccer, but he has not played in the past two years (he does not have enough free time).
d. Waldo did not sell Alicia the soccer net (because he hopes he'll be able to play again soon).