question_answer

It is known that if  \[\mathbf{a}\text{ }+\text{ }\mathbf{b}\text{ }+\text{ }\mathbf{c}\text{ }=\text{ }\mathbf{18}\] then\[a + b + c +d= 18+d\]. The Euclid?s axiom that illustrates this statement is __________

A) First axiom  

B)                                            Second axiom

C)  Third axiom                                                     

D) Fourth axiom

E)  None of these