Which statement correctly defines the structure of the iambic pentameter meter?
A. A line of iambic pentameter contains four feet, with the unstressed syllable following the stressed syllable.
B. A line of iambic pentameter contains three feet, with the stressed syllable following the unstressed syllable.
C. A line of iambic pentameter contains six feet, with the stressed syllable following the unstressed syllable.
D. A line of iambic pentameter contains five feet, with the unstressed syllable following the stressed syllable.
