In the following, which options are correct and which are wrong?

The confidence index indicates a strong stock market when the

Ratio between the average yield on S&P 500 stocks to the average yield on high-grade corporate bonds rises.

Consumer confidence index rises above its long-term trend.

Ratio of the average yield on high-grade corporate bonds to the average yield on low-grade corporate bonds rises.

Demand for bonds declines relative to the demand for equity securities.

Explain your answers