Which of the following rules govern the syllable division of the word "study"?

The English long vowels always occur in a phonetically open syllable when they are separated from a following syllabic sound by only one consonant

The English diphthong always occur in a phonetically open syllable when they are separated from a following syllabic sound by only one consonant

The English unstressed vowels always occur in a phonetically open syllable when they are separated from a following syllabic sound by only one consonant

A short stressed vowel when separated from a following syllabic sound by only one consonant always occur in a closed syllable, although it is difficult to tell where the point of syllable division is