A company has a very high staff turnover and this has resulted in them relying on hiring quite a number of short term staff to cover the gaps. What is the indirect result of this on the labour rate and material usage variance? Labour Rate-No impact Material Usage-No impact Labour Rate- Favourable Material Usage-Favourable Labour Rate-Adverse Material Usage-Adverse Labour Rate- No impact Material Usage-Favourable Labour Rate- Favourable Material Usage-Adverse Labour Rate- Adverse Material Usage-Favourable Labour Rate-Favourable. Material Usage-No impact