Which of the following is an example of a correctly written parenthetical citation? (HINT: pay close attention to the punctuation!)

a) Djema al Fna square is located in the old medina of Marrakesh and is a great place to shop, watch entertainment, and get lost (Jemaa el-Fna Square).

b) According to the National Geographic Staff, Mount Rainier was established in 1899. (Mount Rainier Staff)

c) Djema al Fna square is located in the old medina of Marrakesh and is a great place to shop, watch entertainment, and get lost. (Jemaa el-Fna Square)

d) According to the National Geographic Staff, Mount Rainier was established in 1899.