A Rectangular Tank $80 \mathrm {~cm}$ High And $180 \mathrm {~cm}$ Long Is Filled with Water and Pressurized To

A rectangular tank $80 \mathrm {~cm}$ high and $180 \mathrm {~cm}$ long is filled with water and pressurized to $20 \mathrm { kPa }$ at the top. If it is accelerated at the rate of $5 \mathrm {~m} / \mathrm { s } ^ { 2 }$ on a horizontal plane in the direction of its longer side, what is the highest pressure in the tank?

A) 49.1 kPa
B) 44.9 kPa
C) 41.2 kPa
D) 36.8 kPa