Evaluate the Line Integral Using the Fundamental Theorem of Line $\int _ { C } ( 7 y \hat { \mathbf { i } } + 7 x \hat { \mathbf { j } } ) \cdot d \overrightarrow { \mathbf { r } }$

Multiple Choice

Evaluate the line integral using the Fundamental Theorem of Line Integrals. Use a computer algebra system to verify your results. $\int _ { C } ( 7 y \hat { \mathbf { i } } + 7 x \hat { \mathbf { j } } ) \cdot d \overrightarrow { \mathbf { r } }$
C: a smooth curve from $( 0,0 )$ to $( 2,4 )$

A) 30
B) 15
C) 13
D) 56
E) 169