Which sentence contains an inappropriate shift in verb tense?
A. Maria, thinking about her dance solo, failed to see the bus as it came around the corner.
B. Maria was thinking about her dance solo and failed to see the bus as it came around the corner.
C. As Maria thought about her dance solo, she failed to see the bus as it came around the corner.
D. Maria, thinking about her dance solo, fails to see the bus as it came around the corner