Which Two Statements About PCIe Are True? (Choose Two

Which two statements about PCIe are true? (Choose two.)

A) The PCIe link is built around dedicated unidirectional couples of serial, point-to-point connections known as lanes.
B) You can install a PCI Express x8 adapter into an x4 slot.
C) The PCIe standard is a bus-based system in which all the devices share the same bidirectional, 32-bit or 64-bit, parallel signal path.
D) The PCIe 1.0 standard doubles the transfer rate compared to PCIe 2.0.
E) A link that is composed of four lanes is called an x4 link.