There are 20 seats in Row C of Section 45 Field. Row C is the third row in that section, but there are also three rows of baseline seating ahead of 45 Field. So your seats are essentially the sixth row from the field.
Rows A-F in Field 45 have 20 seats. Rows G-O have 21 seats and Rows P-T have 22 seats. Row W is wheelchair accessible.