Which of the following sentences shows correct usage of a comma or commas? a. claire's plum pudding was mainly distinctive, for its absence of plums. b. christopher wren, a contemporary of isaac newton and john locke, was the architect of st. paul's cathedral. c. after a fire at their home, carlie and her mother rented a house in glendale arizona from november 14, 2007 to january 28, 2008. d. william of orange, arrived in england in 1688, to claim the english throne from james ii.