What is output by the following code:

char sentenceStr[50] = "My favorite colors are ";

strncat(sentenceStr, "red, blue, and green.", 9);

cout << sentenceStr;

Select one:

a. My favorite colors are red, blue, and green.

b. My favorite colors are red, blue,

c. My favorite colors are red, blu

d. My favorite colors are red, blue