The width of Zorn's patio is labeled in the diagram below. If the perimeter of the patio is (30x + 26) feet, what is the length of the patio?

A rectangle with its width labeled (seven x plus four) feet.

A.
(16x + 18) feet
B.
(12x + 11) feet
C.
(23x + 22) feet
D.
(8x + 9) feet