Please help I got 2 answers

The cabin pressure of a passenger jet cruising at high altitude (30,000 ft) is about 1 atm. and the pressure outside is about 0.3 atm. What is the outward force on a window measuring 1 foot by 1 foot. 10.3 1b 100.3 1b 1,000.3 1b 1,481.8 1b 2,116.8 1b