A 1,500-Kg Sailboat Experiences an Eastward Force of 3,500 N

A 1,500-kg sailboat experiences an eastward force of 3,500 N by the ocean tide and a wind force against its sails with magnitude of 6,000 N directed toward the northwest (45° N of W) .What is the magnitude of the resultant acceleration?

A) 2.9 m/s²
B) 5.9 m/s²
C) 4.6 m/s²
D) 6.3 m/s²
E) ​1.7 m/s²