Let's analyze the stress patterns of the provided words:

1. **A. reserved** - stress on the second syllable (re-SERVED)
**B. invent** - stress on the second syllable (in-VENT)
**C. beneath** - stress on the second syllable (be-NEATH)
**D. wardrobe** - stress on the first syllable (WARDrobe)

In this set, **D. wardrobe** has a different stress pattern as it is stressed on the first syllable, while the others are stressed on the second syllable.

2. **A. character** - stress on the first syllable (CHARacter)
**B. transmit** - stress on the second syllable (trans-MIT)
**C. opposite** - stress on the first syllable (OPposite)
**D. dangerous** - stress on the first syllable (DANgerous)

In this set, **B. transmit** has a different stress pattern as it is stressed on the second syllable, while the others are stressed on the first syllable.

To summarize:
1. **D. wardrobe**
2. **B. transmit**