Which of the following is not true about regular verb

No choices are given so I'll just list down the reasons why a regular verb is called a regular verb.

1) Its past and participle are the same.

2) Regular verb is a verb whose past tense and past participles are formed by adding - ed or d to the end of the verb.

For example:

Present tense: plan roll dry

Past tense : planned rolled dried

Past Participle : planned rolled dried

*see the past tense and past participle are the same.

Examples of irregular verbs.

Present tense: write break meet

Past tense : wrote broke met

Past Participle: written broken met

*notice that the past and past participle are different. No - ed or d is added to the end of the verb.