The Civil War lasted from 1861 until 1865. Fala spent a total of 12 for a ticket and souvenirs at a Civil War Museum. She spent 3 for the ticket. What equation could help you calculate the dollars, d , that Fala spent on souvenirs?
a. 3-d=12
b. 3+d=12
c. 3+d=12
d. 3d=12