Write the Word or Phrase That Best Completes Each Statement $( 4,1 )$

Multiple Choice

Write the word or phrase that best completes each statement or answers the question.
Provide the missing information.
-Passes through $( 4,1 )$ and the slope is undefined.

A) $y = 1$
B) $y = x + 4$
C) $y = x + 1$
D) $x = 4$