$\text { Find the relative maxima of } f ( x ) = \cos ^ { 2 } ( 4 x ) \text { on the interval } ( 0,3.142 ) \text { by applying }$

Multiple Choice

$\text { Find the relative maxima of } f ( x ) = \cos ^ { 2 } ( 4 x ) \text { on the interval } ( 0,3.142 ) \text { by applying }$
the First Derivative Test. Round numerical values in your answer to three decimal places.

A) relative maxima: $( 1.571,1 ) , ( 1.963,1 ) , ( 2.356,13.142 )$
B) relative maxima: $( 0.393,0 ) ( 1.178,0 ) , ( 1.963,0 ) , ( 2.749,0 )$
C) relative maxima: $( 0.785,1 ) , ( 1.571,1 ) , ( 2.356,1 )$
D) relative maxima: $( 0.393,1 ) , ( 1.178,1 ) , ( 1.963,1 ) , ( 2.749,1 )$
E) relative maxima: $( 0.393,1 ) , ( 0.785,1 ) , ( 1.178,1 )$