Which sentence uses parentheses correctly? a) (while the fire raged) the park rangers scrambled to get all the campers out of harm's way. b) alex's computer (which he had owned for three years) suddenly went missing after school. c) janet (a girl who no one had ever noticed before surprised everyone by running for homecoming queen. d) although emily was glad mike had texted her) she wasn't sure what his cryptic message actually meant.