6.23 Which statement is true regarding the statement t+frequency[responses [answer]]: a) This statement increases the appropriate frequency counter de- pending on the value of responses [answer] b) This statement increases the appropriate answer counter depend- ing on the value of frequency [responses ]. c) This statement increases the appropriate responses counter de- pending on the value of frequency [answer]. d) This statement produces a syntax error because subscripts cannot be nested. 6.5 Using Character Arrays to Store and Manipulate Strings 6.25 Which statement is false? a) The string termination character is called the null haracter. b) The string"string" actually occupies 7 characters in memory c) The character representation of the last character in memory of a string is N0' d) A character array representing a string should be defined as large as the actual number of characters in the string minus the terminating character, C automatically provides the space for the terminating character 6.26 The definition char string1[] = "first"; is equivalent to: a) charactdest ring![] ('f','1','r', 's','t','\0'}; b)char stringi {'f','i',"r','s', 't','\0'); c) char stringi[] s f, rs,tui d) char stringi (i 'stNo