Find all solutions of the equation. Leave answers in trigonometric form.x4 + 16 = 0
A. {
cis 45°, 
cis 315°, 
cis 135°, 
cis 225°}
B. {2 cis 45°, 2 cis 315°, 2 cis 135°, 2 cis 225°}
C. {
cis 26.565°, 
cis 333.435°, 
cis 153.435°, 
cis 206.565°}
D. {16 cis 45°, 16 cis 315°, 16 cis 135°, 16 cis 225°}
Answer: B
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Provide an appropriate response.The formula used to find the volume of the frustum of a square pyramid is 
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