Which $of$ the following integral expressions CANNOT $be$ found using any $of$ the basic integration formulas

$or$ the techniques that we've discussed $in$ class?

$(A){\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x^5}{1+x^4}dx$

$(B){\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x^3}{1+x^4}dx$

$(C){\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x}{1+x^4}dx$

$(D){\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{1}{1+x^4}dx$

A reminder $to$ show ALL work that leads $to$ your

answer. $If$ a written explanation $in$ words $is$ necessary,

please $be$ sure $to$ include $it.$ Use the space provided

below $to$ name the method $(no$ additional work $is$

necessary$)$ that can $be$ used for the remaining three

integrals.

$A.$

$B.$

$C.$

$D.$