As you approach Shreves cut-off you see Red River LandingGage (302.4 AHP) which reads 4.2 feet. Which of thefollowing statements is TRUE? （）

A. This reading is at the same elevation as the 6.2 ft. mark on the gage at Head of Passes
B. A vessel drawing 8 ft would be able to pass over the sill at Old River Lock
C. This reading is 6.4 feet below the Low Water Reference Plane
D. A vessel drawing 7 ft. would be able to pass through the locks at Lower Old River